/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/array-crafted/zero_sum_const5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:43:00,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:43:00,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:43:00,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:43:00,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:43:00,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:43:00,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:43:00,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:43:00,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:43:00,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:43:00,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:43:00,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:43:00,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:43:00,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:43:00,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:43:00,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:43:00,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:43:00,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:43:00,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:43:00,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:43:00,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:43:00,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:43:00,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:43:00,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:43:00,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:43:00,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:43:00,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:43:00,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:43:00,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:43:00,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:43:00,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:43:00,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:43:00,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:43:00,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:43:00,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:43:00,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:43:00,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:43:00,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:43:00,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:43:00,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:43:00,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:43:00,970 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 09:43:01,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:43:01,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:43:01,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:43:01,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:43:01,034 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:43:01,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:43:01,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:43:01,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:43:01,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:43:01,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:43:01,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:43:01,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:43:01,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:43:01,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:43:01,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:43:01,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:43:01,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:43:01,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:43:01,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:43:01,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:43:01,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:43:01,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:43:01,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:43:01,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:43:01,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:43:01,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:43:01,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:43:01,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:43:01,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:43:01,043 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 09:43:01,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:43:01,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:43:01,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:43:01,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:43:01,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:43:01,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2020-10-12 09:43:01,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33ce4d18c/3b8b78e17d2f4e4a9d17e2bc2c72dabe/FLAG1ff3e69a7 [2020-10-12 09:43:02,123 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:43:02,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const5.c [2020-10-12 09:43:02,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33ce4d18c/3b8b78e17d2f4e4a9d17e2bc2c72dabe/FLAG1ff3e69a7 [2020-10-12 09:43:02,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33ce4d18c/3b8b78e17d2f4e4a9d17e2bc2c72dabe [2020-10-12 09:43:02,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:43:02,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:43:02,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:43:02,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:43:02,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:43:02,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c28f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02, skipping insertion in model container [2020-10-12 09:43:02,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:43:02,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:43:02,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:43:02,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:43:02,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:43:02,849 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:43:02,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02 WrapperNode [2020-10-12 09:43:02,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:43:02,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:43:02,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:43:02,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:43:02,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:02,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (1/1) ... [2020-10-12 09:43:03,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:43:03,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:43:03,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:43:03,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:43:03,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (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 09:43:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:43:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:43:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 09:43:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 09:43:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:43:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:43:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 09:43:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 09:43:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 09:43:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 09:43:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 09:43:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:43:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 09:43:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:43:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:43:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:43:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:43:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:43:03,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:43:03,504 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-12 09:43:03,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:03 BoogieIcfgContainer [2020-10-12 09:43:03,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:43:03,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:43:03,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:43:03,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:43:03,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:43:02" (1/3) ... [2020-10-12 09:43:03,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:03, skipping insertion in model container [2020-10-12 09:43:03,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:43:02" (2/3) ... [2020-10-12 09:43:03,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a22d619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:43:03, skipping insertion in model container [2020-10-12 09:43:03,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:43:03" (3/3) ... [2020-10-12 09:43:03,523 INFO L109 eAbstractionObserver]: Analyzing ICFG zero_sum_const5.c [2020-10-12 09:43:03,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:43:03,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:43:03,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:43:03,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:43:03,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:43:03,613 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:43:03,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:43:03,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:43:03,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:43:03,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:43:03,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:43:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-12 09:43:03,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:43:03,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:03,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:03,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:03,656 INFO L82 PathProgramCache]: Analyzing trace with hash -449577023, now seen corresponding path program 1 times [2020-10-12 09:43:03,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:03,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851623146] [2020-10-12 09:43:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:05,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:06,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:07,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:43:07,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 09:43:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4012 [2020-10-12 09:43:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:43:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:07,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 09:43:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 09:43:07,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:08,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:08,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:08,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:08,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 09:43:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:08,034 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 09:43:08,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851623146] [2020-10-12 09:43:08,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:43:08,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 09:43:08,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888944138] [2020-10-12 09:43:08,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:43:08,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:08,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:43:08,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:43:08,074 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 6 states. [2020-10-12 09:43:08,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:08,432 INFO L93 Difference]: Finished difference Result 120 states and 186 transitions. [2020-10-12 09:43:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:43:08,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-12 09:43:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:08,447 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:43:08,447 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 09:43:08,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:43:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 09:43:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-12 09:43:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:43:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2020-10-12 09:43:08,513 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 32 [2020-10-12 09:43:08,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:08,514 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2020-10-12 09:43:08,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:43:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2020-10-12 09:43:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 09:43:08,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:08,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:08,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:43:08,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:08,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:08,518 INFO L82 PathProgramCache]: Analyzing trace with hash -80080895, now seen corresponding path program 1 times [2020-10-12 09:43:08,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:08,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478965753] [2020-10-12 09:43:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:13,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:13,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:43:13,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 09:43:13,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 09:43:13,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:43:13,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:43:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:43:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:13,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:13,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:13,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:13,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:43:13,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478965753] [2020-10-12 09:43:13,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:13,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:43:13,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52016915] [2020-10-12 09:43:13,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:43:13,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:13,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:43:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:43:13,655 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand 6 states. [2020-10-12 09:43:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:13,981 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2020-10-12 09:43:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:43:13,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-12 09:43:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:13,983 INFO L225 Difference]: With dead ends: 109 [2020-10-12 09:43:13,983 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 09:43:13,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:43:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 09:43:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-12 09:43:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:43:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-12 09:43:14,008 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 34 [2020-10-12 09:43:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:14,009 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-12 09:43:14,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:43:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-12 09:43:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 09:43:14,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:14,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:14,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:43:14,015 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash 253867821, now seen corresponding path program 1 times [2020-10-12 09:43:14,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:14,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502300980] [2020-10-12 09:43:14,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:19,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:43:19,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 09:43:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:43:19,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:43:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:43:19,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:19,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:19,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 09:43:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 09:43:19,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502300980] [2020-10-12 09:43:19,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:19,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:43:19,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084994329] [2020-10-12 09:43:19,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:43:19,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:19,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:43:19,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:43:19,180 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 6 states. [2020-10-12 09:43:19,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:19,586 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2020-10-12 09:43:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:43:19,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-12 09:43:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:19,588 INFO L225 Difference]: With dead ends: 122 [2020-10-12 09:43:19,588 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 09:43:19,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:43:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 09:43:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-12 09:43:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:43:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-12 09:43:19,613 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 54 [2020-10-12 09:43:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:19,614 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-12 09:43:19,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:43:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-12 09:43:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 09:43:19,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:19,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:19,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:43:19,621 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:19,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1195572919, now seen corresponding path program 2 times [2020-10-12 09:43:19,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:19,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722005042] [2020-10-12 09:43:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:21,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:43:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:43:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-12 09:43:24,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-12 09:43:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 09:43:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:27,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:27,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:27,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:43:27,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722005042] [2020-10-12 09:43:27,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:27,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:43:27,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918993458] [2020-10-12 09:43:27,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:43:27,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:43:27,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:43:27,196 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 34 states. [2020-10-12 09:43:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:30,191 INFO L93 Difference]: Finished difference Result 222 states and 252 transitions. [2020-10-12 09:43:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:43:30,192 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 76 [2020-10-12 09:43:30,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:30,195 INFO L225 Difference]: With dead ends: 222 [2020-10-12 09:43:30,195 INFO L226 Difference]: Without dead ends: 216 [2020-10-12 09:43:30,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=273, Invalid=2079, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:43:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-12 09:43:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 130. [2020-10-12 09:43:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-12 09:43:30,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-10-12 09:43:30,219 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 76 [2020-10-12 09:43:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:30,219 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-10-12 09:43:30,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:43:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-10-12 09:43:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 09:43:30,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:30,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:30,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:43:30,222 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:30,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1341042069, now seen corresponding path program 3 times [2020-10-12 09:43:30,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:30,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538926774] [2020-10-12 09:43:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:30,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:30,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:35,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:35,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:43:35,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:43:35,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:43:35,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:43:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 09:43:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:43:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:35,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:35,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:35,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:35,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:43:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 09:43:35,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538926774] [2020-10-12 09:43:35,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:35,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:43:35,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403030821] [2020-10-12 09:43:35,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:43:35,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:35,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:43:35,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:43:35,384 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 10 states. [2020-10-12 09:43:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:36,213 INFO L93 Difference]: Finished difference Result 265 states and 311 transitions. [2020-10-12 09:43:36,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:43:36,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-12 09:43:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:36,217 INFO L225 Difference]: With dead ends: 265 [2020-10-12 09:43:36,217 INFO L226 Difference]: Without dead ends: 159 [2020-10-12 09:43:36,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:43:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-12 09:43:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 148. [2020-10-12 09:43:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-12 09:43:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 167 transitions. [2020-10-12 09:43:36,261 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 167 transitions. Word has length 78 [2020-10-12 09:43:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:36,261 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 167 transitions. [2020-10-12 09:43:36,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:43:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 167 transitions. [2020-10-12 09:43:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 09:43:36,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:36,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:36,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:43:36,276 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1092318379, now seen corresponding path program 4 times [2020-10-12 09:43:36,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:36,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023609003] [2020-10-12 09:43:36,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:41,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:41,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:43:41,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:43:41,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:43:41,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:43:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 09:43:41,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:43:41,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:41,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:41,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:41,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:41,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:41,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:41,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:41,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 09:43:41,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023609003] [2020-10-12 09:43:41,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:41,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:43:41,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828949201] [2020-10-12 09:43:41,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:43:41,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:43:41,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:43:41,411 INFO L87 Difference]: Start difference. First operand 148 states and 167 transitions. Second operand 10 states. [2020-10-12 09:43:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:43:41,952 INFO L93 Difference]: Finished difference Result 249 states and 278 transitions. [2020-10-12 09:43:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:43:41,952 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2020-10-12 09:43:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:43:41,954 INFO L225 Difference]: With dead ends: 249 [2020-10-12 09:43:41,954 INFO L226 Difference]: Without dead ends: 110 [2020-10-12 09:43:41,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:43:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-12 09:43:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-10-12 09:43:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 09:43:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2020-10-12 09:43:41,972 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 78 [2020-10-12 09:43:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:43:41,973 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2020-10-12 09:43:41,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:43:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2020-10-12 09:43:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:43:41,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:43:41,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:43:41,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:43:41,977 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:43:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:43:41,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1668276929, now seen corresponding path program 5 times [2020-10-12 09:43:41,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:43:41,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124321103] [2020-10-12 09:43:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:43:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:47,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:47,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 09:43:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:43:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 09:43:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-12 09:43:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:43:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 09:43:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:43:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:43:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:43:52,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:43:52,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:43:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:43:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:43:52,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:43:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:43:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:43:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:43:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:43:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:43:52,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124321103] [2020-10-12 09:43:52,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:43:52,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-12 09:43:52,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831037480] [2020-10-12 09:43:52,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-12 09:43:52,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:43:52,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-12 09:43:52,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2259, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 09:43:52,255 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 50 states. [2020-10-12 09:43:54,047 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2020-10-12 09:43:54,387 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-12 09:43:54,633 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-12 09:43:55,198 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-10-12 09:43:55,531 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 09:43:55,794 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-12 09:43:56,744 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2020-10-12 09:44:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:00,594 INFO L93 Difference]: Finished difference Result 227 states and 259 transitions. [2020-10-12 09:44:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 09:44:00,595 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2020-10-12 09:44:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:00,600 INFO L225 Difference]: With dead ends: 227 [2020-10-12 09:44:00,601 INFO L226 Difference]: Without dead ends: 222 [2020-10-12 09:44:00,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 10 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=540, Invalid=5940, Unknown=0, NotChecked=0, Total=6480 [2020-10-12 09:44:00,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-12 09:44:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 204. [2020-10-12 09:44:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-12 09:44:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2020-10-12 09:44:00,629 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 98 [2020-10-12 09:44:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:00,629 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2020-10-12 09:44:00,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-12 09:44:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2020-10-12 09:44:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 09:44:00,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:00,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:00,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:44:00,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:00,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:00,632 INFO L82 PathProgramCache]: Analyzing trace with hash 119858975, now seen corresponding path program 6 times [2020-10-12 09:44:00,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:00,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463332133] [2020-10-12 09:44:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:00,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:00,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:00,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:04,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 09:44:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:44:05,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:05,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:44:05,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 09:44:05,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463332133] [2020-10-12 09:44:05,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:05,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:44:05,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689939381] [2020-10-12 09:44:05,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:44:05,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:05,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:44:05,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:44:05,779 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand 12 states. [2020-10-12 09:44:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:07,414 INFO L93 Difference]: Finished difference Result 407 states and 471 transitions. [2020-10-12 09:44:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:44:07,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-12 09:44:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:07,417 INFO L225 Difference]: With dead ends: 407 [2020-10-12 09:44:07,417 INFO L226 Difference]: Without dead ends: 253 [2020-10-12 09:44:07,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:44:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-12 09:44:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 198. [2020-10-12 09:44:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-12 09:44:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 218 transitions. [2020-10-12 09:44:07,448 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 218 transitions. Word has length 100 [2020-10-12 09:44:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:07,448 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 218 transitions. [2020-10-12 09:44:07,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:44:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 218 transitions. [2020-10-12 09:44:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 09:44:07,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:07,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:07,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:44:07,450 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 849934269, now seen corresponding path program 7 times [2020-10-12 09:44:07,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:07,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612145220] [2020-10-12 09:44:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:07,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:12,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 09:44:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:44:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:12,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:44:12,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-12 09:44:12,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612145220] [2020-10-12 09:44:12,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:12,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:44:12,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190523842] [2020-10-12 09:44:12,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:44:12,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:44:12,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:44:12,622 INFO L87 Difference]: Start difference. First operand 198 states and 218 transitions. Second operand 12 states. [2020-10-12 09:44:13,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:13,505 INFO L93 Difference]: Finished difference Result 309 states and 338 transitions. [2020-10-12 09:44:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:44:13,505 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 102 [2020-10-12 09:44:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:13,508 INFO L225 Difference]: With dead ends: 309 [2020-10-12 09:44:13,508 INFO L226 Difference]: Without dead ends: 132 [2020-10-12 09:44:13,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:44:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-12 09:44:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-12 09:44:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 09:44:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-10-12 09:44:13,523 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 102 [2020-10-12 09:44:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:13,523 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-10-12 09:44:13,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:44:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-10-12 09:44:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 09:44:13,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:13,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:13,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:44:13,527 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:13,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:13,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1988100939, now seen corresponding path program 8 times [2020-10-12 09:44:13,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:13,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223462553] [2020-10-12 09:44:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:18,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:18,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:44:18,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:44:18,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:44:18,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-12 09:44:18,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:44:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 09:44:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:29,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:29,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:29,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:29,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:29,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:44:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:44:29,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223462553] [2020-10-12 09:44:29,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:29,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-12 09:44:29,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198280475] [2020-10-12 09:44:29,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-12 09:44:29,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:29,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-12 09:44:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=5066, Unknown=0, NotChecked=0, Total=5700 [2020-10-12 09:44:29,139 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 76 states. [2020-10-12 09:44:29,703 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 18 [2020-10-12 09:44:30,407 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 97 [2020-10-12 09:44:30,741 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-10-12 09:44:31,891 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2020-10-12 09:44:32,348 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-12 09:44:32,801 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 09:44:33,323 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 93 [2020-10-12 09:44:33,643 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 09:44:34,443 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 102 [2020-10-12 09:44:34,744 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-12 09:44:35,898 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 94 [2020-10-12 09:44:36,767 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2020-10-12 09:44:37,184 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2020-10-12 09:44:37,611 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2020-10-12 09:44:38,151 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2020-10-12 09:44:38,672 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2020-10-12 09:44:39,142 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 73 [2020-10-12 09:44:39,601 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2020-10-12 09:44:40,174 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2020-10-12 09:44:40,656 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-12 09:44:41,008 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-12 09:44:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:48,585 INFO L93 Difference]: Finished difference Result 343 states and 388 transitions. [2020-10-12 09:44:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-12 09:44:48,587 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 120 [2020-10-12 09:44:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:48,590 INFO L225 Difference]: With dead ends: 343 [2020-10-12 09:44:48,590 INFO L226 Difference]: Without dead ends: 337 [2020-10-12 09:44:48,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 3 SyntacticMatches, 18 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=1423, Invalid=10567, Unknown=0, NotChecked=0, Total=11990 [2020-10-12 09:44:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-12 09:44:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 266. [2020-10-12 09:44:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-12 09:44:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 308 transitions. [2020-10-12 09:44:48,628 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 308 transitions. Word has length 120 [2020-10-12 09:44:48,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:48,630 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 308 transitions. [2020-10-12 09:44:48,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-12 09:44:48,630 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 308 transitions. [2020-10-12 09:44:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:44:48,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:48,632 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:48,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:44:48,632 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1653396119, now seen corresponding path program 9 times [2020-10-12 09:44:48,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:48,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284593103] [2020-10-12 09:44:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:48,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:48,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:48,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:49,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:53,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:53,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 09:44:53,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:44:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:44:53,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:44:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:44:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:44:53,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:44:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:53,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:53,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:44:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:44:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 09:44:53,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284593103] [2020-10-12 09:44:53,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:44:53,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:44:53,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453507232] [2020-10-12 09:44:53,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:44:53,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:44:53,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:44:53,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:44:53,810 INFO L87 Difference]: Start difference. First operand 266 states and 308 transitions. Second operand 14 states. [2020-10-12 09:44:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:44:55,957 INFO L93 Difference]: Finished difference Result 591 states and 683 transitions. [2020-10-12 09:44:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:44:55,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-12 09:44:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:44:55,962 INFO L225 Difference]: With dead ends: 591 [2020-10-12 09:44:55,962 INFO L226 Difference]: Without dead ends: 383 [2020-10-12 09:44:55,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:44:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-12 09:44:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 364. [2020-10-12 09:44:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 09:44:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 406 transitions. [2020-10-12 09:44:56,000 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 406 transitions. Word has length 122 [2020-10-12 09:44:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:44:56,000 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 406 transitions. [2020-10-12 09:44:56,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:44:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 406 transitions. [2020-10-12 09:44:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:44:56,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:44:56,002 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:44:56,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:44:56,003 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:44:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:44:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash 191276419, now seen corresponding path program 10 times [2020-10-12 09:44:56,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:44:56,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373688069] [2020-10-12 09:44:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:44:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:44:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:56,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:56,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:44:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:01,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:01,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 09:45:01,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 09:45:01,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:45:01,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:45:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 09:45:01,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:45:01,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:45:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:01,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:01,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:45:01,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:45:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 49 proven. 16 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 09:45:01,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373688069] [2020-10-12 09:45:01,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:45:01,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:45:01,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084919613] [2020-10-12 09:45:01,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:45:01,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:45:01,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:45:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:45:01,271 INFO L87 Difference]: Start difference. First operand 364 states and 406 transitions. Second operand 16 states. [2020-10-12 09:45:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:45:02,587 INFO L93 Difference]: Finished difference Result 500 states and 551 transitions. [2020-10-12 09:45:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:45:02,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 128 [2020-10-12 09:45:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:45:02,591 INFO L225 Difference]: With dead ends: 500 [2020-10-12 09:45:02,591 INFO L226 Difference]: Without dead ends: 154 [2020-10-12 09:45:02,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:45:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-12 09:45:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 143. [2020-10-12 09:45:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-12 09:45:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2020-10-12 09:45:02,614 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 128 [2020-10-12 09:45:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:45:02,615 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2020-10-12 09:45:02,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:45:02,615 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2020-10-12 09:45:02,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 09:45:02,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:45:02,623 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:45:02,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:45:02,623 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:45:02,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:45:02,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1580007339, now seen corresponding path program 11 times [2020-10-12 09:45:02,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:45:02,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916325006] [2020-10-12 09:45:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:45:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:07,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:10,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:10,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 09:45:10,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:45:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7380 [2020-10-12 09:45:10,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 111 [2020-10-12 09:45:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:45:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 09:45:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:25,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:45:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:45:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:45:25,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:45:25,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:25,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:45:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:45:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:45:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 12 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:45:25,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916325006] [2020-10-12 09:45:25,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:45:25,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-12 09:45:25,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626804194] [2020-10-12 09:45:25,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-12 09:45:25,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:45:25,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-12 09:45:25,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=6527, Unknown=0, NotChecked=0, Total=6972 [2020-10-12 09:45:25,671 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 84 states. [2020-10-12 09:45:26,026 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 3 [2020-10-12 09:45:26,503 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 18 [2020-10-12 09:45:27,298 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-12 09:45:29,060 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-12 09:45:29,538 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-12 09:45:31,317 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-12 09:45:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:45:45,341 INFO L93 Difference]: Finished difference Result 291 states and 316 transitions. [2020-10-12 09:45:45,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 09:45:45,345 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 142 [2020-10-12 09:45:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:45:45,348 INFO L225 Difference]: With dead ends: 291 [2020-10-12 09:45:45,348 INFO L226 Difference]: Without dead ends: 286 [2020-10-12 09:45:45,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 3 SyntacticMatches, 29 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4274 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=665, Invalid=9037, Unknown=0, NotChecked=0, Total=9702 [2020-10-12 09:45:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-12 09:45:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 256. [2020-10-12 09:45:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-12 09:45:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 276 transitions. [2020-10-12 09:45:45,392 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 276 transitions. Word has length 142 [2020-10-12 09:45:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:45:45,393 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 276 transitions. [2020-10-12 09:45:45,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-12 09:45:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 276 transitions. [2020-10-12 09:45:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 09:45:45,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:45:45,396 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:45:45,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:45:45,396 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:45:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:45:45,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1250255501, now seen corresponding path program 12 times [2020-10-12 09:45:45,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:45:45,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181910675] [2020-10-12 09:45:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:45:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:45,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:45,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:50,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:45:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:45:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:45:50,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:45:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 09:45:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 09:45:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:45:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:50,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:50,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:45:50,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:45:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:45:50,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:45:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:45:50,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:45:50,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 09:45:50,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181910675] [2020-10-12 09:45:50,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:45:50,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:45:50,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995835470] [2020-10-12 09:45:50,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:45:50,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:45:50,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:45:50,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:45:50,708 INFO L87 Difference]: Start difference. First operand 256 states and 276 transitions. Second operand 16 states. [2020-10-12 09:45:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:45:52,985 INFO L93 Difference]: Finished difference Result 613 states and 668 transitions. [2020-10-12 09:45:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:45:52,988 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 144 [2020-10-12 09:45:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:45:52,992 INFO L225 Difference]: With dead ends: 613 [2020-10-12 09:45:52,992 INFO L226 Difference]: Without dead ends: 289 [2020-10-12 09:45:52,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:45:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-12 09:45:53,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 271. [2020-10-12 09:45:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-12 09:45:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 290 transitions. [2020-10-12 09:45:53,032 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 290 transitions. Word has length 144 [2020-10-12 09:45:53,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:45:53,033 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 290 transitions. [2020-10-12 09:45:53,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:45:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 290 transitions. [2020-10-12 09:45:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 09:45:53,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:45:53,036 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:45:53,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:45:53,037 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:45:53,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:45:53,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1787125773, now seen corresponding path program 13 times [2020-10-12 09:45:53,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:45:53,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610835994] [2020-10-12 09:45:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:45:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:53,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:45:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:45:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 09:45:58,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:45:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:45:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:45:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:45:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:45:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:45:58,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:45:58,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:45:58,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:45:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:45:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:45:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:45:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:45:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:45:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:45:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 09:45:58,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610835994] [2020-10-12 09:45:58,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:45:58,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:45:58,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143250563] [2020-10-12 09:45:58,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:45:58,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:45:58,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:45:58,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:45:58,332 INFO L87 Difference]: Start difference. First operand 271 states and 290 transitions. Second operand 16 states. [2020-10-12 09:46:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:46:00,990 INFO L93 Difference]: Finished difference Result 278 states and 297 transitions. [2020-10-12 09:46:00,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:46:00,993 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 144 [2020-10-12 09:46:00,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:46:00,995 INFO L225 Difference]: With dead ends: 278 [2020-10-12 09:46:00,995 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 09:46:00,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:46:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 09:46:01,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-10-12 09:46:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-12 09:46:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-10-12 09:46:01,014 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 144 [2020-10-12 09:46:01,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:46:01,015 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-10-12 09:46:01,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:46:01,015 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-10-12 09:46:01,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:46:01,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:46:01,018 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:46:01,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:46:01,018 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:46:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:46:01,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2135980511, now seen corresponding path program 14 times [2020-10-12 09:46:01,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:46:01,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297004181] [2020-10-12 09:46:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:46:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:46:01,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:46:07,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:46:07,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 09:46:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:46:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5897 [2020-10-12 09:46:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:46:07,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 127 [2020-10-12 09:46:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:46:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-12 09:46:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:46:09,616 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-10-12 09:46:09,880 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-12 09:46:12,809 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-12 09:46:13,210 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-12 09:46:13,589 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-10-12 09:46:13,982 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-10-12 09:46:14,406 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-10-12 09:46:14,817 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-12 09:46:15,228 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-12 09:46:15,642 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-10-12 09:46:16,064 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-12 09:46:16,509 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-12 09:46:16,858 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-12 09:46:17,658 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-10-12 09:46:18,120 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-10-12 09:46:18,592 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-12 09:46:19,097 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-12 09:46:21,409 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-10-12 09:46:22,178 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2020-10-12 09:46:23,001 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-12 09:46:23,843 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2020-10-12 09:46:24,673 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-12 09:46:25,497 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 43 [2020-10-12 09:46:26,300 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-12 09:46:27,056 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-12 09:46:27,945 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-12 09:46:28,793 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-12 09:46:29,568 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-10-12 09:46:30,389 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-12 09:46:31,209 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-12 09:46:31,972 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-10-12 09:46:33,097 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-10-12 09:46:34,094 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-10-12 09:46:34,952 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 36 [2020-10-12 09:46:35,860 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-10-12 09:46:36,632 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-10-12 09:46:37,367 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2020-10-12 09:46:38,082 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-10-12 09:46:38,788 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2020-10-12 09:46:39,521 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36