/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:12:43,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:12:43,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:12:43,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:12:43,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:12:43,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:12:43,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:12:43,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:12:43,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:12:43,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:12:43,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:12:43,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:12:43,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:12:43,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:12:43,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:12:44,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:12:44,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:12:44,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:12:44,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:12:44,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:12:44,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:12:44,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:12:44,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:12:44,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:12:44,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:12:44,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:12:44,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:12:44,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:12:44,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:12:44,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:12:44,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:12:44,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:12:44,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:12:44,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:12:44,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:12:44,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:12:44,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:12:44,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:12:44,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:12:44,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:12:44,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:12:44,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:12:44,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:12:44,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:12:44,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:12:44,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:12:44,073 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:12:44,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:12:44,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:12:44,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:12:44,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:12:44,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:12:44,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:12:44,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:12:44,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:12:44,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:12:44,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:12:44,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:12:44,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:12:44,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:12:44,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:12:44,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:12:44,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:12:44,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:12:44,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:12:44,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:12:44,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:12:44,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:12:44,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:12:44,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:12:44,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:12:44,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:12:44,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:12:44,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:12:44,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:12:44,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:12:44,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:12:44,406 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-12 18:12:44,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/432fd2732/90685116683d4861ac0ecc2d1d9b1031/FLAG801bdeb1b [2020-10-12 18:12:44,953 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:12:44,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-12 18:12:44,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/432fd2732/90685116683d4861ac0ecc2d1d9b1031/FLAG801bdeb1b [2020-10-12 18:12:45,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/432fd2732/90685116683d4861ac0ecc2d1d9b1031 [2020-10-12 18:12:45,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:12:45,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:12:45,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:12:45,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:12:45,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:12:45,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45, skipping insertion in model container [2020-10-12 18:12:45,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:12:45,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:12:45,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:12:45,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:12:45,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:12:45,569 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:12:45,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45 WrapperNode [2020-10-12 18:12:45,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:12:45,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:12:45,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:12:45,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:12:45,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (1/1) ... [2020-10-12 18:12:45,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:12:45,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:12:45,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:12:45,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:12:45,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (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 [2020-10-12 18:12:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:12:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:12:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-10-12 18:12:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:12:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:12:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:12:45,752 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-10-12 18:12:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:12:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:12:45,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:12:45,938 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:12:45,938 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 18:12:45,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:12:45 BoogieIcfgContainer [2020-10-12 18:12:45,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:12:45,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:12:45,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:12:45,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:12:45,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:12:45" (1/3) ... [2020-10-12 18:12:45,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7700ce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:12:45, skipping insertion in model container [2020-10-12 18:12:45,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:12:45" (2/3) ... [2020-10-12 18:12:45,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7700ce95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:12:45, skipping insertion in model container [2020-10-12 18:12:45,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:12:45" (3/3) ... [2020-10-12 18:12:45,950 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-10-12 18:12:45,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:12:45,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:12:45,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:12:46,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:12:46,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:12:46,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:12:46,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:12:46,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:12:46,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:12:46,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:12:46,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:12:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-12 18:12:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 18:12:46,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:46,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:46,030 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-10-12 18:12:46,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:46,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424525197] [2020-10-12 18:12:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:46,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:46,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 18:12:46,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:46,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-12 18:12:46,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:12:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:12:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:12:46,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:46,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:12:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:46,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:46,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:46,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:46,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:46,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:46,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:12:46,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:46,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:46,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424525197] [2020-10-12 18:12:46,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:46,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:12:46,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354020387] [2020-10-12 18:12:46,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:12:46,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:46,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:12:46,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:12:46,769 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-10-12 18:12:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:46,923 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-10-12 18:12:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:12:46,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-12 18:12:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:46,936 INFO L225 Difference]: With dead ends: 39 [2020-10-12 18:12:46,936 INFO L226 Difference]: Without dead ends: 25 [2020-10-12 18:12:46,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:12:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-12 18:12:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-12 18:12:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-12 18:12:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-12 18:12:46,983 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 15 [2020-10-12 18:12:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:46,984 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-12 18:12:46,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:12:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-10-12 18:12:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 18:12:46,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:46,987 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] [2020-10-12 18:12:46,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:12:46,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:46,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:46,988 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-10-12 18:12:46,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:46,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099550030] [2020-10-12 18:12:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:12:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-12 18:12:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:12:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 18:12:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:12:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:47,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:47,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:47,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:47,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:47,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 18:12:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:12:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:12:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 18:12:47,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099550030] [2020-10-12 18:12:47,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:47,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:12:47,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137627693] [2020-10-12 18:12:47,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:12:47,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:47,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:12:47,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:12:47,368 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 8 states. [2020-10-12 18:12:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:47,505 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-10-12 18:12:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:12:47,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-12 18:12:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:47,508 INFO L225 Difference]: With dead ends: 32 [2020-10-12 18:12:47,508 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 18:12:47,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:12:47,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 18:12:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-12 18:12:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-12 18:12:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-12 18:12:47,518 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 22 [2020-10-12 18:12:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:47,518 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-12 18:12:47,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:12:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-12 18:12:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 18:12:47,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:47,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:47,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:12:47,521 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 408363011, now seen corresponding path program 1 times [2020-10-12 18:12:47,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:47,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032736233] [2020-10-12 18:12:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:12:47,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:47,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-12 18:12:47,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:47,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 18:12:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:12:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:47,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:12:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 18:12:47,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:12:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:12:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:47,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:12:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:12:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:12:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:47,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:12:47,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:12:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:12:47,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:12:47,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:12:47,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032736233] [2020-10-12 18:12:47,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:12:47,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 18:12:47,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272256039] [2020-10-12 18:12:47,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:12:47,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:47,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:12:47,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:12:47,958 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 7 states. [2020-10-12 18:12:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:48,124 INFO L93 Difference]: Finished difference Result 65 states and 107 transitions. [2020-10-12 18:12:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:12:48,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-12 18:12:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:48,128 INFO L225 Difference]: With dead ends: 65 [2020-10-12 18:12:48,128 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 18:12:48,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:12:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 18:12:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-12 18:12:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 18:12:48,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2020-10-12 18:12:48,147 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 28 [2020-10-12 18:12:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:48,148 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2020-10-12 18:12:48,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:12:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2020-10-12 18:12:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 18:12:48,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:48,152 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:48,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:12:48,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash 718507263, now seen corresponding path program 1 times [2020-10-12 18:12:48,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:48,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849611587] [2020-10-12 18:12:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:48,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:48,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:12:48,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:48,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 18:12:48,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:12:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 18:12:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:12:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:48,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:48,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:48,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:48,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:48,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:48,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:48,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:48,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:48,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:48,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 18:12:48,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 18:12:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:12:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:12:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:48,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:48,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:48,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:48,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 18:12:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:12:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:48,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:48,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:12:48,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:48,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 18:12:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:48,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:48,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:48,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:12:48,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:48,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 18:12:48,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849611587] [2020-10-12 18:12:48,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:48,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:12:48,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760553918] [2020-10-12 18:12:48,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:12:48,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:12:48,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:12:48,792 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand 13 states. [2020-10-12 18:12:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:49,289 INFO L93 Difference]: Finished difference Result 107 states and 195 transitions. [2020-10-12 18:12:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:12:49,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-12 18:12:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:49,296 INFO L225 Difference]: With dead ends: 107 [2020-10-12 18:12:49,296 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 18:12:49,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:12:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 18:12:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 58. [2020-10-12 18:12:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 18:12:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 95 transitions. [2020-10-12 18:12:49,325 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 95 transitions. Word has length 35 [2020-10-12 18:12:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:49,325 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 95 transitions. [2020-10-12 18:12:49,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:12:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 95 transitions. [2020-10-12 18:12:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 18:12:49,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:49,328 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:49,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:12:49,329 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:49,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1711672813, now seen corresponding path program 2 times [2020-10-12 18:12:49,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:49,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205847173] [2020-10-12 18:12:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:49,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:12:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 18:12:49,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:12:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 18:12:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 18:12:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:49,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:49,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:49,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:49,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:49,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:49,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:49,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:12:49,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 18:12:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:12:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:12:49,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:49,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:49,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:49,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 18:12:49,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:12:49,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:12:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:49,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:12:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:50,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 18:12:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:12:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:12:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 18:12:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:50,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:50,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:50,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:12:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 18:12:50,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205847173] [2020-10-12 18:12:50,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:50,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:12:50,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996923549] [2020-10-12 18:12:50,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:12:50,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:50,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:12:50,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:12:50,109 INFO L87 Difference]: Start difference. First operand 58 states and 95 transitions. Second operand 13 states. [2020-10-12 18:12:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:50,360 INFO L93 Difference]: Finished difference Result 91 states and 157 transitions. [2020-10-12 18:12:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:12:50,361 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-12 18:12:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:50,364 INFO L225 Difference]: With dead ends: 91 [2020-10-12 18:12:50,364 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 18:12:50,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:12:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 18:12:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 57. [2020-10-12 18:12:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 18:12:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 88 transitions. [2020-10-12 18:12:50,383 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 88 transitions. Word has length 42 [2020-10-12 18:12:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:50,383 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 88 transitions. [2020-10-12 18:12:50,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:12:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 88 transitions. [2020-10-12 18:12:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 18:12:50,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:50,386 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:50,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:12:50,387 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:50,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:50,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1051926487, now seen corresponding path program 3 times [2020-10-12 18:12:50,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:50,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061878361] [2020-10-12 18:12:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:52,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:52,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:12:52,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:12:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-10-12 18:12:52,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:12:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 18:12:52,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:12:52,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:52,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:52,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:52,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:12:52,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:52,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:53,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:12:53,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:12:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-12 18:12:53,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:53,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:12:53,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:12:53,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:12:53,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 18:12:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:12:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:53,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:53,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:12:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 18:12:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:53,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:53,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:12:53,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:12:53,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:12:53,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:53,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:53,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:12:53,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 18:12:53,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061878361] [2020-10-12 18:12:53,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:53,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:12:53,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222737519] [2020-10-12 18:12:53,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:12:53,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:12:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:12:53,315 INFO L87 Difference]: Start difference. First operand 57 states and 88 transitions. Second operand 9 states. [2020-10-12 18:12:53,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:53,472 INFO L93 Difference]: Finished difference Result 110 states and 217 transitions. [2020-10-12 18:12:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:12:53,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-12 18:12:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:53,475 INFO L225 Difference]: With dead ends: 110 [2020-10-12 18:12:53,475 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 18:12:53,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:12:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 18:12:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-12 18:12:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:12:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 74 transitions. [2020-10-12 18:12:53,492 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 74 transitions. Word has length 42 [2020-10-12 18:12:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:53,493 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 74 transitions. [2020-10-12 18:12:53,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:12:53,493 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 74 transitions. [2020-10-12 18:12:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 18:12:53,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:53,495 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:53,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:12:53,496 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:53,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:53,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1391486109, now seen corresponding path program 4 times [2020-10-12 18:12:53,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:53,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122967237] [2020-10-12 18:12:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:53,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 18:12:55,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 18:12:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:55,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 18:12:55,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 18:12:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:12:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 18:12:55,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:12:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 18:12:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:12:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:12:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:55,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:12:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:55,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:12:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:55,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:12:55,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:55,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:55,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:12:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:55,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:55,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:12:55,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:12:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:12:55,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:12:55,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:55,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:12:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:12:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 18:12:55,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122967237] [2020-10-12 18:12:55,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:55,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:12:55,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028226745] [2020-10-12 18:12:55,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:12:55,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:55,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:12:55,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:12:55,770 INFO L87 Difference]: Start difference. First operand 49 states and 74 transitions. Second operand 9 states. [2020-10-12 18:12:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:55,923 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2020-10-12 18:12:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:12:55,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-12 18:12:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:55,925 INFO L225 Difference]: With dead ends: 94 [2020-10-12 18:12:55,926 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 18:12:55,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:12:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 18:12:55,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-12 18:12:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 18:12:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2020-10-12 18:12:55,936 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 49 [2020-10-12 18:12:55,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:55,937 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2020-10-12 18:12:55,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:12:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2020-10-12 18:12:55,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:12:55,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:55,939 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:55,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:12:55,940 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:55,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:55,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 5 times [2020-10-12 18:12:55,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:55,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303574254] [2020-10-12 18:12:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:55,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:56,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 18:12:57,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-12 18:12:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:12:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 18:12:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:12:57,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:57,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:12:57,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:12:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:12:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:12:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 18:12:57,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:12:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:12:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:12:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:12:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:12:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:12:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:12:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 18:12:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 18:12:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:12:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:12:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:57,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:12:57,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:12:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:57,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:57,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:12:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:57,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:57,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 18:12:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:57,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:12:57,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:12:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:57,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 18:12:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:12:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:12:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:12:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:12:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:12:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:57,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:12:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:57,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:57,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:12:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:12:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:12:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 47 proven. 38 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-12 18:12:57,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303574254] [2020-10-12 18:12:57,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:57,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:12:57,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469374006] [2020-10-12 18:12:57,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:12:57,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:57,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:12:57,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:12:57,755 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand 15 states. [2020-10-12 18:12:58,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:58,119 INFO L93 Difference]: Finished difference Result 91 states and 179 transitions. [2020-10-12 18:12:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:12:58,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-12 18:12:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:58,121 INFO L225 Difference]: With dead ends: 91 [2020-10-12 18:12:58,121 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 18:12:58,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:12:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 18:12:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 18:12:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 18:12:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 18:12:58,123 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-10-12 18:12:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:58,124 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 18:12:58,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:12:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 18:12:58,124 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 18:12:58,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:12:58,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 18:12:58,757 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 18:12:58,758 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:12:58,758 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 18:12:58,758 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 18:12:58,758 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 18:12:58,758 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 18:12:58,758 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-10-12 18:12:58,759 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (or (and (= |ackermann_#in~n| 1) (not (<= 2 |ackermann_#res|))) (not (= |ackermann_#in~m| 0))) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-10-12 18:12:58,759 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-10-12 18:12:58,759 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-12 18:12:58,759 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-12 18:12:58,760 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse0 (= |ackermann_#in~m| 0))) (and (or (and (= |ackermann_#in~n| 1) (not (<= 2 |ackermann_#res|))) (not .cse0)) (let ((.cse2 (= ackermann_~n |ackermann_#in~n|)) (.cse1 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= 2 |ackermann_#t~ret1|) (<= 1 |ackermann_#in~m|) .cse1 .cse2) (and .cse2 .cse1 .cse0))))) [2020-10-12 18:12:58,760 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-10-12 18:12:58,760 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-12 18:12:58,760 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-10-12 18:12:58,760 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-12 18:12:58,760 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-10-12 18:12:58,761 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-10-12 18:12:58,761 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-10-12 18:12:58,761 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-10-12 18:12:58,761 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-10-12 18:12:58,761 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-10-12 18:12:58,761 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-10-12 18:12:58,761 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-10-12 18:12:58,762 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-10-12 18:12:58,762 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-10-12 18:12:58,762 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-10-12 18:12:58,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:12:58 BoogieIcfgContainer [2020-10-12 18:12:58,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:12:58,771 INFO L168 Benchmark]: Toolchain (without parser) took 13426.48 ms. Allocated memory was 148.9 MB in the beginning and 392.2 MB in the end (delta: 243.3 MB). Free memory was 102.8 MB in the beginning and 242.3 MB in the end (delta: -139.5 MB). Peak memory consumption was 103.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:58,771 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 18:12:58,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.67 ms. Allocated memory is still 148.9 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:58,773 INFO L168 Benchmark]: Boogie Preprocessor took 107.93 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 182.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:58,774 INFO L168 Benchmark]: RCFGBuilder took 263.19 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 170.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:58,775 INFO L168 Benchmark]: TraceAbstraction took 12824.69 ms. Allocated memory was 204.5 MB in the beginning and 392.2 MB in the end (delta: 187.7 MB). Free memory was 169.5 MB in the beginning and 242.3 MB in the end (delta: -72.8 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. [2020-10-12 18:12:58,778 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 225.67 ms. Allocated memory is still 148.9 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.93 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 182.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.19 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 170.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12824.69 ms. Allocated memory was 204.5 MB in the beginning and 392.2 MB in the end (delta: 187.7 MB). Free memory was 169.5 MB in the beginning and 242.3 MB in the end (delta: -72.8 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.1s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 184 SDtfs, 195 SDslu, 726 SDs, 0 SdLazy, 1167 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 83 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 157 PreInvPairs, 216 NumberOfFragments, 78 HoareAnnotationTreeSize, 157 FomulaSimplifications, 7994 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 568 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 26032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 250/335 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...