/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/loop-new/nested-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:56:11,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:56:11,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:56:12,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:56:12,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:56:12,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:56:12,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:56:12,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:56:12,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:56:12,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:56:12,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:56:12,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:56:12,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:56:12,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:56:12,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:56:12,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:56:12,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:56:12,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:56:12,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:56:12,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:56:12,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:56:12,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:56:12,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:56:12,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:56:12,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:56:12,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:56:12,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:56:12,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:56:12,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:56:12,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:56:12,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:56:12,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:56:12,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:56:12,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:56:12,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:56:12,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:56:12,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:56:12,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:56:12,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:56:12,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:56:12,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:56:12,077 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 [2020-10-14 23:56:12,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:56:12,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:56:12,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:56:12,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:56:12,099 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:56:12,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:56:12,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:56:12,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:56:12,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:56:12,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:56:12,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:56:12,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:56:12,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:56:12,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:56:12,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:56:12,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:56:12,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:56:12,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:56:12,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:56:12,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:56:12,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:56:12,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:56:12,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:56:12,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:56:12,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:56:12,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:56:12,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:56:12,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:56:12,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:56:12,104 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:56:12,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:56:12,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:56:12,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:56:12,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:56:12,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:56:12,467 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/nested-1.i [2020-10-14 23:56:12,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d572be04/f8b199136b4947b092ca8e0e0dcbf565/FLAG94353fea6 [2020-10-14 23:56:12,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:56:12,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/nested-1.i [2020-10-14 23:56:12,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d572be04/f8b199136b4947b092ca8e0e0dcbf565/FLAG94353fea6 [2020-10-14 23:56:13,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d572be04/f8b199136b4947b092ca8e0e0dcbf565 [2020-10-14 23:56:13,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:56:13,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:56:13,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:56:13,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:56:13,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:56:13,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c10e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13, skipping insertion in model container [2020-10-14 23:56:13,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:56:13,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:56:13,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:56:13,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:56:13,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:56:13,663 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:56:13,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13 WrapperNode [2020-10-14 23:56:13,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:56:13,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:56:13,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:56:13,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:56:13,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (1/1) ... [2020-10-14 23:56:13,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:56:13,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:56:13,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:56:13,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:56:13,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (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 [2020-10-14 23:56:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:56:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:56:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:56:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:56:13,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:56:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:56:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:56:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:56:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:56:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:56:13,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:56:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:56:13,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:56:14,041 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:56:14,041 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 23:56:14,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:56:14 BoogieIcfgContainer [2020-10-14 23:56:14,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:56:14,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:56:14,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:56:14,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:56:14,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:56:13" (1/3) ... [2020-10-14 23:56:14,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0247b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:56:14, skipping insertion in model container [2020-10-14 23:56:14,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:13" (2/3) ... [2020-10-14 23:56:14,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0247b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:56:14, skipping insertion in model container [2020-10-14 23:56:14,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:56:14" (3/3) ... [2020-10-14 23:56:14,053 INFO L109 eAbstractionObserver]: Analyzing ICFG nested-1.i [2020-10-14 23:56:14,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:56:14,071 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:56:14,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:56:14,108 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:56:14,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:56:14,109 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:56:14,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:56:14,109 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:56:14,109 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:56:14,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:56:14,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:56:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 23:56:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:56:14,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:14,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:14,134 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash 718771107, now seen corresponding path program 1 times [2020-10-14 23:56:14,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:14,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995481041] [2020-10-14 23:56:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:14,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:56:14,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 23:56:14,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:14,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:56:14,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:56:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:56:14,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:56:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:14,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:14,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:14,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:14,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:56:14,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:14,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:14,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:14,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:14,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:14,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995481041] [2020-10-14 23:56:14,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:56:14,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:56:14,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236082182] [2020-10-14 23:56:14,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:56:14,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:14,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:56:14,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:56:14,472 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-10-14 23:56:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:14,550 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-10-14 23:56:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:56:14,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 23:56:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:14,561 INFO L225 Difference]: With dead ends: 45 [2020-10-14 23:56:14,562 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 23:56:14,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:56:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 23:56:14,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-10-14 23:56:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 23:56:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-14 23:56:14,632 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-10-14 23:56:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:14,633 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-14 23:56:14,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:56:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-14 23:56:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:56:14,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:14,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:14,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:56:14,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:14,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash 609355859, now seen corresponding path program 1 times [2020-10-14 23:56:14,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:14,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429674749] [2020-10-14 23:56:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:14,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:14,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:56:14,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:56:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 23:56:14,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:56:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:56:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:56:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:56:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:14,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:56:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:14,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429674749] [2020-10-14 23:56:14,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:14,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:56:14,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986969988] [2020-10-14 23:56:14,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:56:14,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:56:14,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:56:14,997 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-10-14 23:56:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:15,049 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-14 23:56:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:56:15,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-14 23:56:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:15,051 INFO L225 Difference]: With dead ends: 29 [2020-10-14 23:56:15,051 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 23:56:15,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:56:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 23:56:15,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-14 23:56:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 23:56:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-14 23:56:15,059 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-14 23:56:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:15,060 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-14 23:56:15,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:56:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-14 23:56:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:56:15,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:15,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:15,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:56:15,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash 899880355, now seen corresponding path program 2 times [2020-10-14 23:56:15,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:15,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124385097] [2020-10-14 23:56:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:15,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:56:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:56:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 23:56:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:15,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:56:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:56:15,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:56:15,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:15,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:15,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:15,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124385097] [2020-10-14 23:56:15,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:15,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:56:15,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425693774] [2020-10-14 23:56:15,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:56:15,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:15,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:56:15,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:56:15,481 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-14 23:56:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:15,547 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-10-14 23:56:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:56:15,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 23:56:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:15,549 INFO L225 Difference]: With dead ends: 33 [2020-10-14 23:56:15,549 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 23:56:15,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:56:15,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 23:56:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-10-14 23:56:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:56:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-14 23:56:15,557 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 18 [2020-10-14 23:56:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:15,557 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-14 23:56:15,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:56:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-14 23:56:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:56:15,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:15,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:15,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:56:15,559 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1556039251, now seen corresponding path program 3 times [2020-10-14 23:56:15,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:15,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908358542] [2020-10-14 23:56:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:15,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 23:56:15,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:56:15,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 23:56:15,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:56:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:56:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:56:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:56:15,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:15,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:15,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:15,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:15,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908358542] [2020-10-14 23:56:15,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:15,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:56:15,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926133836] [2020-10-14 23:56:15,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:56:15,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:15,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:56:15,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:56:15,945 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2020-10-14 23:56:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:16,031 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-14 23:56:16,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:56:16,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-14 23:56:16,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:16,034 INFO L225 Difference]: With dead ends: 37 [2020-10-14 23:56:16,034 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:56:16,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:56:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:56:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-14 23:56:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:56:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 23:56:16,043 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 21 [2020-10-14 23:56:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:16,044 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 23:56:16,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:56:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 23:56:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:56:16,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:16,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:16,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:56:16,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1505421405, now seen corresponding path program 4 times [2020-10-14 23:56:16,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:16,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103233245] [2020-10-14 23:56:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:17,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:56:17,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:56:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-14 23:56:17,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:17,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:56:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:56:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:17,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:17,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:17,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:17,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:17,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:17,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:17,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 23:56:17,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103233245] [2020-10-14 23:56:17,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:17,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 23:56:17,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230925849] [2020-10-14 23:56:17,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:56:17,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:17,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:56:17,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:56:17,033 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 4 states. [2020-10-14 23:56:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:17,065 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2020-10-14 23:56:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:56:17,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 23:56:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:17,066 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:56:17,066 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 23:56:17,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:56:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 23:56:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2020-10-14 23:56:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:56:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 23:56:17,076 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-14 23:56:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:17,076 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 23:56:17,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:56:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 23:56:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:56:17,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:17,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:17,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:56:17,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:17,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1436831011, now seen corresponding path program 1 times [2020-10-14 23:56:17,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:17,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077778585] [2020-10-14 23:56:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:21,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:56:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:56:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4904 [2020-10-14 23:56:21,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:21,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:56:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:56:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:56:22,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:22,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:22,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:22,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:22,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:22,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 23:56:22,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077778585] [2020-10-14 23:56:22,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:22,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:56:22,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743481280] [2020-10-14 23:56:22,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:56:22,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:22,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:56:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:56:22,050 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-14 23:56:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:22,108 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-14 23:56:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:56:22,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-14 23:56:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:22,110 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:56:22,110 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:56:22,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:56:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:56:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 23:56:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:56:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 23:56:22,126 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2020-10-14 23:56:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:22,128 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 23:56:22,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:56:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 23:56:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:56:22,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:22,129 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:22,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:56:22,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:22,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:22,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1716682915, now seen corresponding path program 2 times [2020-10-14 23:56:22,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:22,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688387464] [2020-10-14 23:56:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:22,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:22,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:22,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:27,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:56:27,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:56:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:56:27,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:27,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:27,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:56:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:56:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:27,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:27,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:27,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:27,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:27,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:27,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 7 proven. 43 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 23:56:27,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688387464] [2020-10-14 23:56:27,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:27,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:56:27,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183400386] [2020-10-14 23:56:27,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:56:27,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:27,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:56:27,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:56:27,200 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-10-14 23:56:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:27,266 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-10-14 23:56:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:56:27,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-14 23:56:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:27,268 INFO L225 Difference]: With dead ends: 81 [2020-10-14 23:56:27,268 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:56:27,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:56:27,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:56:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-14 23:56:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:56:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 23:56:27,279 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 40 [2020-10-14 23:56:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:27,280 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 23:56:27,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:56:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 23:56:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:56:27,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:27,282 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:27,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:56:27,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:27,283 INFO L82 PathProgramCache]: Analyzing trace with hash -454905309, now seen corresponding path program 3 times [2020-10-14 23:56:27,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:27,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801845324] [2020-10-14 23:56:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:27,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:32,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:56:32,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:56:32,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:56:32,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:32,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:56:32,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:32,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:56:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:32,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:32,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:32,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:32,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:32,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:32,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 7 proven. 84 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 23:56:32,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801845324] [2020-10-14 23:56:32,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:32,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:56:32,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027030551] [2020-10-14 23:56:32,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:56:32,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:32,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:56:32,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:56:32,357 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 7 states. [2020-10-14 23:56:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:32,426 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2020-10-14 23:56:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:56:32,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-10-14 23:56:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:32,428 INFO L225 Difference]: With dead ends: 95 [2020-10-14 23:56:32,428 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:56:32,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:56:32,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:56:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-10-14 23:56:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:56:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-14 23:56:32,438 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 48 [2020-10-14 23:56:32,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:32,438 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-14 23:56:32,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:56:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-14 23:56:32,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:56:32,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:32,440 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:32,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:56:32,440 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:32,441 INFO L82 PathProgramCache]: Analyzing trace with hash -704126557, now seen corresponding path program 4 times [2020-10-14 23:56:32,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:32,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939216484] [2020-10-14 23:56:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:56:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:37,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:37,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:37,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:37,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 7 proven. 139 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 23:56:37,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939216484] [2020-10-14 23:56:37,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:37,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:56:37,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355207124] [2020-10-14 23:56:37,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:56:37,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:37,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:56:37,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:56:37,523 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 8 states. [2020-10-14 23:56:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:37,611 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-10-14 23:56:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:56:37,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-14 23:56:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:37,614 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:56:37,614 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 23:56:37,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:56:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 23:56:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-14 23:56:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:56:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-14 23:56:37,633 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 56 [2020-10-14 23:56:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:37,633 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-14 23:56:37,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:56:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-14 23:56:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 23:56:37,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:37,636 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:37,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:56:37,636 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash -426438877, now seen corresponding path program 5 times [2020-10-14 23:56:37,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:37,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609357483] [2020-10-14 23:56:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 23:56:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:56:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:56:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:42,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:56:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:42,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:56:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:42,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:42,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:42,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:42,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:42,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:42,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 7 proven. 208 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 23:56:42,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609357483] [2020-10-14 23:56:42,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:42,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:56:42,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595922595] [2020-10-14 23:56:42,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:56:42,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:56:42,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:56:42,734 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-14 23:56:42,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:42,844 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2020-10-14 23:56:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:56:42,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-14 23:56:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:42,845 INFO L225 Difference]: With dead ends: 123 [2020-10-14 23:56:42,845 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 23:56:42,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:56:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 23:56:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-10-14 23:56:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 23:56:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 23:56:42,855 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 64 [2020-10-14 23:56:42,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:42,855 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 23:56:42,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:56:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 23:56:42,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 23:56:42,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:42,857 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:42,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:56:42,857 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:42,858 INFO L82 PathProgramCache]: Analyzing trace with hash 461191843, now seen corresponding path program 6 times [2020-10-14 23:56:42,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:42,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947061073] [2020-10-14 23:56:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:43,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:56:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:56:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:47,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:47,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:47,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 7 proven. 291 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2020-10-14 23:56:47,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947061073] [2020-10-14 23:56:47,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:47,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:56:47,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362191077] [2020-10-14 23:56:47,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:56:47,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:47,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:56:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:56:47,966 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 10 states. [2020-10-14 23:56:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:48,116 INFO L93 Difference]: Finished difference Result 137 states and 148 transitions. [2020-10-14 23:56:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:56:48,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-14 23:56:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:48,117 INFO L225 Difference]: With dead ends: 137 [2020-10-14 23:56:48,117 INFO L226 Difference]: Without dead ends: 85 [2020-10-14 23:56:48,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:56:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-14 23:56:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-14 23:56:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:56:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-14 23:56:48,128 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 72 [2020-10-14 23:56:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:48,128 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-14 23:56:48,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:56:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-14 23:56:48,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 23:56:48,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:48,130 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:48,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:56:48,130 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2116852701, now seen corresponding path program 7 times [2020-10-14 23:56:48,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:48,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353504622] [2020-10-14 23:56:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:48,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:53,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 23:56:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:53,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:53,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:53,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 7 proven. 388 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-10-14 23:56:53,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353504622] [2020-10-14 23:56:53,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:53,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:56:53,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952983474] [2020-10-14 23:56:53,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:56:53,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:53,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:56:53,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:56:53,258 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-14 23:56:53,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:53,412 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-10-14 23:56:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:56:53,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-14 23:56:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:53,419 INFO L225 Difference]: With dead ends: 151 [2020-10-14 23:56:53,419 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:56:53,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:56:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:56:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2020-10-14 23:56:53,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 23:56:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-14 23:56:53,440 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 80 [2020-10-14 23:56:53,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:53,441 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-14 23:56:53,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:56:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-14 23:56:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 23:56:53,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:53,448 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:53,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:56:53,448 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash -557151325, now seen corresponding path program 8 times [2020-10-14 23:56:53,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:53,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224036492] [2020-10-14 23:56:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:58,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 23:56:58,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:56:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:56:58,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:58,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:56:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:56:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:58,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:58,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:56:58,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:56:58,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:58,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 445 proven. 354 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-14 23:56:58,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224036492] [2020-10-14 23:56:58,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:58,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:56:58,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648116971] [2020-10-14 23:56:58,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:56:58,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:58,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:56:58,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:56:58,609 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 12 states. [2020-10-14 23:56:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:58,764 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2020-10-14 23:56:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:56:58,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-10-14 23:56:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:58,770 INFO L225 Difference]: With dead ends: 165 [2020-10-14 23:56:58,771 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 23:56:58,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:56:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 23:56:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2020-10-14 23:56:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:56:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-14 23:56:58,789 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 88 [2020-10-14 23:56:58,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:58,789 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-14 23:56:58,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:56:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-14 23:56:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 23:56:58,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:58,791 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:58,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:56:58,791 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:58,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:58,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1605742883, now seen corresponding path program 9 times [2020-10-14 23:56:58,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:58,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57888125] [2020-10-14 23:56:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 23:57:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:03,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:03,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:03,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:03,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:03,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:03,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:03,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 553 proven. 443 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-10-14 23:57:03,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57888125] [2020-10-14 23:57:03,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:03,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:57:03,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802884693] [2020-10-14 23:57:03,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:57:03,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:03,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:57:03,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:57:03,976 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-14 23:57:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:04,237 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2020-10-14 23:57:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:57:04,238 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-14 23:57:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:04,240 INFO L225 Difference]: With dead ends: 175 [2020-10-14 23:57:04,240 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:57:04,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:57:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:57:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-10-14 23:57:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 23:57:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-14 23:57:04,259 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 96 [2020-10-14 23:57:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:04,260 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-14 23:57:04,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:57:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-14 23:57:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:57:04,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:04,263 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:04,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:57:04,264 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:04,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:04,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1242027171, now seen corresponding path program 10 times [2020-10-14 23:57:04,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:04,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229027309] [2020-10-14 23:57:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:04,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:04,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 23:57:04,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 23:57:04,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:04,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:57:04,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:57:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 23:57:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:04,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:04,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:04,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:04,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-10-14 23:57:04,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229027309] [2020-10-14 23:57:04,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:04,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:57:04,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076744448] [2020-10-14 23:57:04,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:57:04,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:04,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:57:04,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:57:04,769 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 8 states. [2020-10-14 23:57:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:04,861 INFO L93 Difference]: Finished difference Result 155 states and 161 transitions. [2020-10-14 23:57:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:57:04,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-14 23:57:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:04,863 INFO L225 Difference]: With dead ends: 155 [2020-10-14 23:57:04,863 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 23:57:04,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:57:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 23:57:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 128. [2020-10-14 23:57:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 23:57:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-10-14 23:57:04,882 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 104 [2020-10-14 23:57:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:04,884 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-10-14 23:57:04,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:57:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-10-14 23:57:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 23:57:04,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:04,889 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:04,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:57:04,890 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:04,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1095448769, now seen corresponding path program 11 times [2020-10-14 23:57:04,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:04,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484785983] [2020-10-14 23:57:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:05,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:05,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 23:57:05,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-14 23:57:05,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:05,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:57:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:57:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:57:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:05,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:05,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:05,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:05,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:05,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:05,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:05,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:05,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:05,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:05,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2020-10-14 23:57:05,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484785983] [2020-10-14 23:57:05,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:05,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:57:05,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109652590] [2020-10-14 23:57:05,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:57:05,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:57:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:57:05,282 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 9 states. [2020-10-14 23:57:05,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:05,411 INFO L93 Difference]: Finished difference Result 178 states and 185 transitions. [2020-10-14 23:57:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:57:05,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-10-14 23:57:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:05,413 INFO L225 Difference]: With dead ends: 178 [2020-10-14 23:57:05,413 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 23:57:05,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:57:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 23:57:05,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 151. [2020-10-14 23:57:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 23:57:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 157 transitions. [2020-10-14 23:57:05,429 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 157 transitions. Word has length 127 [2020-10-14 23:57:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:05,429 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 157 transitions. [2020-10-14 23:57:05,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:57:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 157 transitions. [2020-10-14 23:57:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 23:57:05,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:05,431 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:05,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:57:05,432 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:05,432 INFO L82 PathProgramCache]: Analyzing trace with hash -762665693, now seen corresponding path program 12 times [2020-10-14 23:57:05,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:05,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042010959] [2020-10-14 23:57:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:57:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:57:05,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 23:57:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:05,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:05,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:05,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:05,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:05,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:05,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-14 23:57:05,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042010959] [2020-10-14 23:57:05,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:05,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:57:05,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806103284] [2020-10-14 23:57:05,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:57:05,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:05,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:57:05,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:57:05,948 INFO L87 Difference]: Start difference. First operand 151 states and 157 transitions. Second operand 10 states. [2020-10-14 23:57:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:06,088 INFO L93 Difference]: Finished difference Result 201 states and 209 transitions. [2020-10-14 23:57:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:57:06,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-10-14 23:57:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:06,090 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:57:06,090 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 23:57:06,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:57:06,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 23:57:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 174. [2020-10-14 23:57:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 23:57:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 181 transitions. [2020-10-14 23:57:06,105 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 181 transitions. Word has length 150 [2020-10-14 23:57:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:06,105 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 181 transitions. [2020-10-14 23:57:06,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:57:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 181 transitions. [2020-10-14 23:57:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 23:57:06,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:06,108 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:06,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:57:06,108 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:06,108 INFO L82 PathProgramCache]: Analyzing trace with hash 147809983, now seen corresponding path program 13 times [2020-10-14 23:57:06,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:06,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600542726] [2020-10-14 23:57:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 23:57:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-14 23:57:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:06,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:57:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:57:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 23:57:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:06,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:06,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2020-10-14 23:57:06,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600542726] [2020-10-14 23:57:06,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:06,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:57:06,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142702878] [2020-10-14 23:57:06,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:57:06,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:06,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:57:06,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:57:06,747 INFO L87 Difference]: Start difference. First operand 174 states and 181 transitions. Second operand 11 states. [2020-10-14 23:57:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:06,916 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2020-10-14 23:57:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:57:06,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2020-10-14 23:57:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:06,918 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:57:06,918 INFO L226 Difference]: Without dead ends: 219 [2020-10-14 23:57:06,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:57:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-14 23:57:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2020-10-14 23:57:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 23:57:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2020-10-14 23:57:06,935 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 173 [2020-10-14 23:57:06,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:06,935 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2020-10-14 23:57:06,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:57:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2020-10-14 23:57:06,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 23:57:06,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:06,938 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:06,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:57:06,938 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:06,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:06,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1011575389, now seen corresponding path program 14 times [2020-10-14 23:57:06,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:06,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522297766] [2020-10-14 23:57:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:07,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-14 23:57:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:07,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:07,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:07,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:07,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:07,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:07,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:07,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-10-14 23:57:07,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522297766] [2020-10-14 23:57:07,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:07,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:57:07,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083751989] [2020-10-14 23:57:07,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:57:07,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:07,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:57:07,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:57:07,757 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 12 states. [2020-10-14 23:57:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:07,924 INFO L93 Difference]: Finished difference Result 247 states and 257 transitions. [2020-10-14 23:57:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:57:07,925 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 196 [2020-10-14 23:57:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:07,927 INFO L225 Difference]: With dead ends: 247 [2020-10-14 23:57:07,927 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 23:57:07,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:57:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 23:57:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 220. [2020-10-14 23:57:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 23:57:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions. [2020-10-14 23:57:07,948 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 196 [2020-10-14 23:57:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:07,948 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions. [2020-10-14 23:57:07,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:57:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions. [2020-10-14 23:57:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 23:57:07,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:07,951 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:07,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:57:07,952 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:07,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1346299455, now seen corresponding path program 15 times [2020-10-14 23:57:07,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:07,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449558630] [2020-10-14 23:57:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-14 23:57:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2020-10-14 23:57:09,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449558630] [2020-10-14 23:57:09,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:09,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:57:09,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840817012] [2020-10-14 23:57:09,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:57:09,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:09,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:57:09,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:57:09,049 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand 13 states. [2020-10-14 23:57:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:09,261 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2020-10-14 23:57:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:57:09,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-10-14 23:57:09,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:09,263 INFO L225 Difference]: With dead ends: 248 [2020-10-14 23:57:09,264 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 23:57:09,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:57:09,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 23:57:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-10-14 23:57:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-14 23:57:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 253 transitions. [2020-10-14 23:57:09,284 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 253 transitions. Word has length 219 [2020-10-14 23:57:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:09,285 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 253 transitions. [2020-10-14 23:57:09,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:57:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 253 transitions. [2020-10-14 23:57:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 23:57:09,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:09,290 INFO L422 BasicCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:09,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:57:09,290 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:09,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1443735075, now seen corresponding path program 16 times [2020-10-14 23:57:09,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:09,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738462859] [2020-10-14 23:57:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:14,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:14,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 23:57:14,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:14,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 23:57:14,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:14,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 104 [2020-10-14 23:57:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 23:57:14,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-14 23:57:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:20,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:20,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:57:20,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:20,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:20,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 23:57:20,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738462859] [2020-10-14 23:57:20,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:57:20,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-10-14 23:57:20,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137805893] [2020-10-14 23:57:20,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-10-14 23:57:20,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:20,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-10-14 23:57:20,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2020-10-14 23:57:20,803 INFO L87 Difference]: Start difference. First operand 243 states and 253 transitions. Second operand 105 states. [2020-10-14 23:57:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:22,352 INFO L93 Difference]: Finished difference Result 9783 states and 10243 transitions. [2020-10-14 23:57:22,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-14 23:57:22,352 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 242 [2020-10-14 23:57:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:22,353 INFO L225 Difference]: With dead ends: 9783 [2020-10-14 23:57:22,353 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:57:22,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2020-10-14 23:57:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:57:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:57:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:57:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:57:22,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-10-14 23:57:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:22,372 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:57:22,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-10-14 23:57:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:57:22,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:57:22,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:57:22,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:57:24,754 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 681 DAG size of output: 672 [2020-10-14 23:58:01,465 WARN L193 SmtUtils]: Spent 36.69 s on a formula simplification. DAG size of input: 5081 DAG size of output: 1283 [2020-10-14 23:58:09,431 WARN L193 SmtUtils]: Spent 7.94 s on a formula simplification. DAG size of input: 672 DAG size of output: 69 [2020-10-14 23:58:49,156 WARN L193 SmtUtils]: Spent 39.72 s on a formula simplification. DAG size of input: 1256 DAG size of output: 367 [2020-10-14 23:58:49,169 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:58:49,170 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-14 23:58:49,170 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-14 23:58:49,171 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-10-14 23:58:49,171 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-14 23:58:49,171 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-10-14 23:58:49,173 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 23) the Hoare annotation is: (let ((.cse5 (<= 90 main_~k~0)) (.cse17 (<= 70 main_~k~0)) (.cse22 (<= 60 main_~k~0)) (.cse27 (<= 10 main_~k~0)) (.cse26 (<= 80 main_~k~0)) (.cse28 (<= 30 main_~k~0)) (.cse29 (<= 20 main_~k~0)) (.cse23 (<= 40 main_~k~0)) (.cse10 (<= (+ main_~j~0 8) main_~m~0)) (.cse18 (<= (+ main_~j~0 1) main_~m~0)) (.cse8 (<= (+ main_~i~0 7) main_~n~0)) (.cse14 (<= (+ main_~j~0 5) main_~m~0)) (.cse13 (<= (+ main_~i~0 2) main_~n~0)) (.cse15 (<= (+ main_~i~0 9) main_~n~0)) (.cse30 (<= 50 main_~k~0)) (.cse4 (<= (+ main_~j~0 10) main_~m~0)) (.cse2 (<= (+ main_~i~0 10) main_~n~0)) (.cse24 (<= (+ main_~i~0 8) main_~n~0)) (.cse11 (<= (+ main_~i~0 4) main_~n~0)) (.cse9 (<= (+ main_~j~0 7) main_~m~0)) (.cse12 (<= (+ main_~i~0 3) main_~n~0)) (.cse16 (<= (+ main_~j~0 4) main_~m~0)) (.cse21 (<= (+ main_~j~0 9) main_~m~0)) (.cse20 (<= (+ main_~j~0 3) main_~m~0)) (.cse6 (<= (+ main_~i~0 1) main_~n~0)) (.cse0 (<= (+ main_~j~0 6) main_~m~0)) (.cse25 (<= (+ main_~i~0 5) main_~n~0)) (.cse1 (<= 10 main_~n~0)) (.cse7 (<= (+ main_~j~0 2) main_~m~0)) (.cse3 (<= 10 main_~m~0)) (.cse19 (<= (+ main_~i~0 6) main_~n~0))) (or (and .cse0 (<= 4 main_~k~0) .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse6 .cse3) (and .cse1 (<= 38 main_~k~0) .cse7 .cse3 .cse8) (and .cse1 .cse2 .cse3 (<= 3 main_~k~0) .cse9) (and .cse10 .cse1 (<= 62 main_~k~0) .cse3 .cse11) (and .cse1 .cse3 (<= 73 main_~k~0) .cse12 .cse9) (and .cse1 .cse5 .cse3 .cse13) (and .cse14 (<= 15 main_~k~0) .cse1 .cse3 .cse15) (and .cse10 .cse1 (<= 92 main_~k~0) .cse6 .cse3) (and .cse14 .cse1 (<= 85 main_~k~0) .cse3 .cse13) (and (<= 86 main_~k~0) .cse1 .cse3 .cse13 .cse16) (and .cse1 (<= 13 main_~k~0) .cse3 .cse15 .cse9) (and .cse1 (<= 16 main_~k~0) .cse3 .cse15 .cse16) (and .cse17 .cse1 .cse3 .cse11) (and .cse1 .cse6 (<= 100 main_~k~0) .cse3) (and .cse18 (<= 39 main_~k~0) .cse1 .cse3 .cse8) (and .cse1 (<= 18 main_~k~0) .cse7 .cse3 .cse15) (and .cse17 .cse4 .cse1 .cse3 .cse12) (and .cse0 .cse1 (<= 14 main_~k~0) .cse3 .cse15) (and (<= 49 main_~k~0) .cse18 .cse1 .cse3 .cse19) (and .cse10 .cse1 (<= 42 main_~k~0) .cse3 .cse19) (and .cse14 .cse1 .cse3 .cse11 (<= 65 main_~k~0)) (and .cse1 .cse20 (<= 7 main_~k~0) .cse2 .cse3) (and .cse1 .cse3 .cse21 .cse11 (<= 61 main_~k~0)) (and .cse22 .cse4 .cse1 .cse3 .cse11) (and (<= 31 main_~k~0) .cse1 .cse3 .cse21 .cse8) (and .cse0 .cse1 (<= 74 main_~k~0) .cse3 .cse12) (and (<= 1 main_~k~0) .cse1 .cse2 .cse3 .cse21) (and .cse4 .cse1 .cse23 .cse19 .cse3) (and .cse14 .cse1 .cse2 .cse3 (<= 5 main_~k~0)) (and .cse10 .cse1 (<= 32 main_~k~0) .cse3 .cse8) (and (<= 72 main_~k~0) .cse10 .cse1 .cse3 .cse12) (and .cse24 .cse1 .cse20 .cse3 (<= 27 main_~k~0)) (and .cse10 .cse24 .cse1 .cse3 (<= 22 main_~k~0)) (and .cse18 .cse1 (<= 9 main_~k~0) .cse2 .cse3) (and .cse18 .cse1 .cse25 .cse3 (<= 59 main_~k~0)) (and (<= 93 main_~k~0) .cse1 .cse6 .cse3 .cse9) (and .cse24 .cse1 .cse7 .cse3 (<= 28 main_~k~0)) (and .cse1 .cse3 (<= 81 main_~k~0) .cse21 .cse13) (and .cse18 .cse1 .cse6 .cse3 (<= 99 main_~k~0)) (and .cse1 .cse3 .cse19 (<= 46 main_~k~0) .cse16) (and .cse4 .cse1 .cse3 .cse13 .cse26) (and .cse14 .cse1 .cse19 .cse3 (<= 45 main_~k~0)) (and (<= 67 main_~k~0) .cse1 .cse20 .cse3 .cse11) (and .cse22 .cse1 .cse25 .cse3) (and .cse1 (<= 83 main_~k~0) .cse3 .cse13 .cse9) (and .cse18 .cse1 (<= 79 main_~k~0) .cse3 .cse12) (and .cse1 .cse25 .cse3 .cse9 (<= 53 main_~k~0)) (and .cse27 .cse1 .cse2 .cse3) (and .cse24 .cse1 .cse3 .cse28) (and .cse27 .cse4 .cse1 .cse3 .cse15) (and .cse18 .cse1 (<= 19 main_~k~0) .cse3 .cse15) (and .cse24 .cse4 .cse1 .cse3 .cse29) (and .cse14 (<= 35 main_~k~0) .cse1 .cse3 .cse8) (and .cse14 (<= 95 main_~k~0) .cse1 .cse6 .cse3) (and .cse1 .cse3 .cse26 .cse12) (and .cse14 (<= 55 main_~k~0) .cse1 .cse25 .cse3) (and .cse0 (<= 64 main_~k~0) .cse1 .cse3 .cse11) (and .cse24 .cse1 (<= 21 main_~k~0) .cse3 .cse21) (and .cse1 .cse7 .cse3 (<= 78 main_~k~0) .cse12) (and .cse0 .cse1 .cse3 .cse8 (<= 34 main_~k~0)) (and .cse1 .cse7 .cse3 .cse11 (<= 68 main_~k~0)) (and (<= 6 main_~k~0) .cse1 .cse2 .cse3 .cse16) (and (<= 43 main_~k~0) .cse1 .cse3 .cse19 .cse9) (and (<= 88 main_~k~0) .cse1 .cse7 .cse3 .cse13) (and .cse4 .cse1 .cse3 .cse8 .cse28) (and .cse1 .cse3 .cse15 .cse29) (and .cse10 (<= 2 main_~k~0) .cse1 .cse2 .cse3) (and (<= 56 main_~k~0) .cse1 .cse25 .cse3 .cse16) (and .cse14 .cse24 .cse1 .cse3 (<= 25 main_~k~0)) (and .cse1 (<= 71 main_~k~0) .cse3 .cse21 .cse12) (and .cse0 .cse24 .cse1 .cse3 (<= 24 main_~k~0)) (and .cse1 .cse3 .cse8 (<= 36 main_~k~0) .cse16) (and .cse10 .cse1 .cse3 .cse13 (<= 82 main_~k~0)) (and (<= 69 main_~k~0) .cse18 .cse1 .cse3 .cse11) (and (<= 33 main_~k~0) .cse1 .cse3 .cse8 .cse9) (and .cse1 .cse20 .cse3 .cse15 (<= 17 main_~k~0)) (and .cse4 .cse1 .cse25 .cse3 .cse30) (and .cse10 .cse1 .cse25 (<= 52 main_~k~0) .cse3) (and .cse24 .cse18 .cse1 (<= 29 main_~k~0) .cse3) (and .cse1 .cse23 .cse3 .cse8) (and (<= 91 main_~k~0) .cse1 .cse6 .cse3 .cse21) (and (<= 98 main_~k~0) .cse1 .cse6 .cse7 .cse3) (and .cse1 .cse3 .cse11 (<= 66 main_~k~0) .cse16) (and .cse1 (<= 8 main_~k~0) .cse7 .cse2 .cse3) (and .cse10 .cse1 (<= 12 main_~k~0) .cse3 .cse15) (and .cse18 .cse1 .cse3 .cse13 (<= 89 main_~k~0)) (and .cse1 (<= 87 main_~k~0) .cse20 .cse3 .cse13) (and (<= 37 main_~k~0) .cse1 .cse20 .cse3 .cse8) (and .cse1 .cse20 .cse19 .cse3 (<= 47 main_~k~0)) (and (<= 96 main_~k~0) .cse1 .cse6 .cse3 .cse16) (and .cse0 .cse1 .cse25 (<= 54 main_~k~0) .cse3) (and .cse1 .cse25 .cse20 (<= 57 main_~k~0) .cse3) (and .cse14 .cse1 .cse3 .cse12 (<= 75 main_~k~0)) (and .cse24 (<= 26 main_~k~0) .cse1 .cse3 .cse16) (and .cse0 .cse1 .cse3 (<= 84 main_~k~0) .cse13) (and .cse1 .cse3 .cse21 .cse15 (<= 11 main_~k~0)) (and (<= 77 main_~k~0) .cse1 .cse20 .cse3 .cse12) (and .cse1 (<= 41 main_~k~0) .cse3 .cse19 .cse21) (and .cse1 .cse19 .cse3 .cse30) (and .cse1 .cse4 (<= 0 main_~k~0) .cse2 .cse3) (and .cse24 (<= 23 main_~k~0) .cse1 .cse3 .cse9) (and .cse1 (<= 63 main_~k~0) .cse3 .cse11 .cse9) (and .cse1 (<= 76 main_~k~0) .cse3 .cse12 .cse16) (and (<= 51 main_~k~0) .cse1 .cse25 .cse3 .cse21) (and (<= 97 main_~k~0) .cse1 .cse20 .cse6 .cse3) (and .cse0 (<= 94 main_~k~0) .cse1 .cse6 .cse3) (and (<= 44 main_~k~0) .cse0 .cse1 .cse19 .cse3) (and .cse1 .cse25 .cse7 .cse3 (<= 58 main_~k~0)) (and .cse1 .cse7 .cse3 .cse19 (<= 48 main_~k~0)))) [2020-10-14 23:58:49,174 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 27) no Hoare annotation was computed. [2020-10-14 23:58:49,174 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-10-14 23:58:49,174 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-14 23:58:49,174 INFO L268 CegarLoopResult]: For program point L20-2(lines 20 24) no Hoare annotation was computed. [2020-10-14 23:58:49,174 INFO L264 CegarLoopResult]: At program point L20-3(lines 20 24) the Hoare annotation is: (let ((.cse0 (<= 10 main_~n~0)) (.cse1 (<= 10 main_~m~0))) (or (and .cse0 (<= 0 main_~k~0) (<= (+ main_~i~0 10) main_~n~0) .cse1) (and (<= (+ main_~i~0 8) main_~n~0) .cse0 .cse1 (<= 20 main_~k~0)) (and .cse0 (<= 40 main_~k~0) (<= (+ main_~i~0 6) main_~n~0) .cse1) (and (<= 10 main_~k~0) .cse0 .cse1 (<= (+ main_~i~0 9) main_~n~0)) (and (<= 60 main_~k~0) .cse0 .cse1 (<= (+ main_~i~0 4) main_~n~0)) (and .cse0 .cse1 (<= (+ main_~i~0 2) main_~n~0) (<= 80 main_~k~0)) (and .cse0 (<= 90 main_~k~0) (<= (+ main_~i~0 1) main_~n~0) .cse1) (and .cse0 .cse1 (<= (+ main_~i~0 7) main_~n~0) (<= 30 main_~k~0)) (and .cse0 (<= 100 main_~k~0) .cse1) (and (<= 70 main_~k~0) .cse0 .cse1 (<= (+ main_~i~0 3) main_~n~0)) (and .cse0 (<= (+ main_~i~0 5) main_~n~0) .cse1 (<= 50 main_~k~0)))) [2020-10-14 23:58:49,174 INFO L264 CegarLoopResult]: At program point L20-4(lines 20 24) the Hoare annotation is: (and (<= 10 main_~n~0) (<= 100 main_~k~0) (<= 10 main_~m~0)) [2020-10-14 23:58:49,174 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-14 23:58:49,175 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-14 23:58:49,175 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 23:58:49,175 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-14 23:58:49,175 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-14 23:58:49,175 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-14 23:58:49,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:58:49 BoogieIcfgContainer [2020-10-14 23:58:49,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:58:49,238 INFO L168 Benchmark]: Toolchain (without parser) took 155854.89 ms. Allocated memory was 147.8 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 104.4 MB in the beginning and 1.1 GB in the end (delta: -948.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2020-10-14 23:58:49,239 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 23:58:49,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.81 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 94.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:58:49,240 INFO L168 Benchmark]: Boogie Preprocessor took 120.81 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.2 MB in the beginning and 182.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:58:49,241 INFO L168 Benchmark]: RCFGBuilder took 259.52 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 168.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:58:49,242 INFO L168 Benchmark]: TraceAbstraction took 155189.79 ms. Allocated memory was 203.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 167.6 MB in the beginning and 1.1 GB in the end (delta: -885.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2020-10-14 23:58:49,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.81 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 94.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.81 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.2 MB in the beginning and 182.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 259.52 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 168.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 155189.79 ms. Allocated memory was 203.9 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 167.6 MB in the beginning and 1.1 GB in the end (delta: -885.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((((((((10 <= n && 0 <= k) && i + 10 <= n) && 10 <= m) || (((i + 8 <= n && 10 <= n) && 10 <= m) && 20 <= k)) || (((10 <= n && 40 <= k) && i + 6 <= n) && 10 <= m)) || (((10 <= k && 10 <= n) && 10 <= m) && i + 9 <= n)) || (((60 <= k && 10 <= n) && 10 <= m) && i + 4 <= n)) || (((10 <= n && 10 <= m) && i + 2 <= n) && 80 <= k)) || (((10 <= n && 90 <= k) && i + 1 <= n) && 10 <= m)) || (((10 <= n && 10 <= m) && i + 7 <= n) && 30 <= k)) || ((10 <= n && 100 <= k) && 10 <= m)) || (((70 <= k && 10 <= n) && 10 <= m) && i + 3 <= n)) || (((10 <= n && i + 5 <= n) && 10 <= m) && 50 <= k) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((j + 6 <= m && 4 <= k) && 10 <= n) && i + 10 <= n) && 10 <= m) || ((((j + 10 <= m && 10 <= n) && 90 <= k) && i + 1 <= n) && 10 <= m)) || ((((10 <= n && 38 <= k) && j + 2 <= m) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && i + 10 <= n) && 10 <= m) && 3 <= k) && j + 7 <= m)) || ((((j + 8 <= m && 10 <= n) && 62 <= k) && 10 <= m) && i + 4 <= n)) || ((((10 <= n && 10 <= m) && 73 <= k) && i + 3 <= n) && j + 7 <= m)) || (((10 <= n && 90 <= k) && 10 <= m) && i + 2 <= n)) || ((((j + 5 <= m && 15 <= k) && 10 <= n) && 10 <= m) && i + 9 <= n)) || ((((j + 8 <= m && 10 <= n) && 92 <= k) && i + 1 <= n) && 10 <= m)) || ((((j + 5 <= m && 10 <= n) && 85 <= k) && 10 <= m) && i + 2 <= n)) || ((((86 <= k && 10 <= n) && 10 <= m) && i + 2 <= n) && j + 4 <= m)) || ((((10 <= n && 13 <= k) && 10 <= m) && i + 9 <= n) && j + 7 <= m)) || ((((10 <= n && 16 <= k) && 10 <= m) && i + 9 <= n) && j + 4 <= m)) || (((70 <= k && 10 <= n) && 10 <= m) && i + 4 <= n)) || (((10 <= n && i + 1 <= n) && 100 <= k) && 10 <= m)) || ((((j + 1 <= m && 39 <= k) && 10 <= n) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && 18 <= k) && j + 2 <= m) && 10 <= m) && i + 9 <= n)) || ((((70 <= k && j + 10 <= m) && 10 <= n) && 10 <= m) && i + 3 <= n)) || ((((j + 6 <= m && 10 <= n) && 14 <= k) && 10 <= m) && i + 9 <= n)) || ((((49 <= k && j + 1 <= m) && 10 <= n) && 10 <= m) && i + 6 <= n)) || ((((j + 8 <= m && 10 <= n) && 42 <= k) && 10 <= m) && i + 6 <= n)) || ((((j + 5 <= m && 10 <= n) && 10 <= m) && i + 4 <= n) && 65 <= k)) || ((((10 <= n && j + 3 <= m) && 7 <= k) && i + 10 <= n) && 10 <= m)) || ((((10 <= n && 10 <= m) && j + 9 <= m) && i + 4 <= n) && 61 <= k)) || ((((60 <= k && j + 10 <= m) && 10 <= n) && 10 <= m) && i + 4 <= n)) || ((((31 <= k && 10 <= n) && 10 <= m) && j + 9 <= m) && i + 7 <= n)) || ((((j + 6 <= m && 10 <= n) && 74 <= k) && 10 <= m) && i + 3 <= n)) || ((((1 <= k && 10 <= n) && i + 10 <= n) && 10 <= m) && j + 9 <= m)) || ((((j + 10 <= m && 10 <= n) && 40 <= k) && i + 6 <= n) && 10 <= m)) || ((((j + 5 <= m && 10 <= n) && i + 10 <= n) && 10 <= m) && 5 <= k)) || ((((j + 8 <= m && 10 <= n) && 32 <= k) && 10 <= m) && i + 7 <= n)) || ((((72 <= k && j + 8 <= m) && 10 <= n) && 10 <= m) && i + 3 <= n)) || ((((i + 8 <= n && 10 <= n) && j + 3 <= m) && 10 <= m) && 27 <= k)) || ((((j + 8 <= m && i + 8 <= n) && 10 <= n) && 10 <= m) && 22 <= k)) || ((((j + 1 <= m && 10 <= n) && 9 <= k) && i + 10 <= n) && 10 <= m)) || ((((j + 1 <= m && 10 <= n) && i + 5 <= n) && 10 <= m) && 59 <= k)) || ((((93 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j + 7 <= m)) || ((((i + 8 <= n && 10 <= n) && j + 2 <= m) && 10 <= m) && 28 <= k)) || ((((10 <= n && 10 <= m) && 81 <= k) && j + 9 <= m) && i + 2 <= n)) || ((((j + 1 <= m && 10 <= n) && i + 1 <= n) && 10 <= m) && 99 <= k)) || ((((10 <= n && 10 <= m) && i + 6 <= n) && 46 <= k) && j + 4 <= m)) || ((((j + 10 <= m && 10 <= n) && 10 <= m) && i + 2 <= n) && 80 <= k)) || ((((j + 5 <= m && 10 <= n) && i + 6 <= n) && 10 <= m) && 45 <= k)) || ((((67 <= k && 10 <= n) && j + 3 <= m) && 10 <= m) && i + 4 <= n)) || (((60 <= k && 10 <= n) && i + 5 <= n) && 10 <= m)) || ((((10 <= n && 83 <= k) && 10 <= m) && i + 2 <= n) && j + 7 <= m)) || ((((j + 1 <= m && 10 <= n) && 79 <= k) && 10 <= m) && i + 3 <= n)) || ((((10 <= n && i + 5 <= n) && 10 <= m) && j + 7 <= m) && 53 <= k)) || (((10 <= k && 10 <= n) && i + 10 <= n) && 10 <= m)) || (((i + 8 <= n && 10 <= n) && 10 <= m) && 30 <= k)) || ((((10 <= k && j + 10 <= m) && 10 <= n) && 10 <= m) && i + 9 <= n)) || ((((j + 1 <= m && 10 <= n) && 19 <= k) && 10 <= m) && i + 9 <= n)) || ((((i + 8 <= n && j + 10 <= m) && 10 <= n) && 10 <= m) && 20 <= k)) || ((((j + 5 <= m && 35 <= k) && 10 <= n) && 10 <= m) && i + 7 <= n)) || ((((j + 5 <= m && 95 <= k) && 10 <= n) && i + 1 <= n) && 10 <= m)) || (((10 <= n && 10 <= m) && 80 <= k) && i + 3 <= n)) || ((((j + 5 <= m && 55 <= k) && 10 <= n) && i + 5 <= n) && 10 <= m)) || ((((j + 6 <= m && 64 <= k) && 10 <= n) && 10 <= m) && i + 4 <= n)) || ((((i + 8 <= n && 10 <= n) && 21 <= k) && 10 <= m) && j + 9 <= m)) || ((((10 <= n && j + 2 <= m) && 10 <= m) && 78 <= k) && i + 3 <= n)) || ((((j + 6 <= m && 10 <= n) && 10 <= m) && i + 7 <= n) && 34 <= k)) || ((((10 <= n && j + 2 <= m) && 10 <= m) && i + 4 <= n) && 68 <= k)) || ((((6 <= k && 10 <= n) && i + 10 <= n) && 10 <= m) && j + 4 <= m)) || ((((43 <= k && 10 <= n) && 10 <= m) && i + 6 <= n) && j + 7 <= m)) || ((((88 <= k && 10 <= n) && j + 2 <= m) && 10 <= m) && i + 2 <= n)) || ((((j + 10 <= m && 10 <= n) && 10 <= m) && i + 7 <= n) && 30 <= k)) || (((10 <= n && 10 <= m) && i + 9 <= n) && 20 <= k)) || ((((j + 8 <= m && 2 <= k) && 10 <= n) && i + 10 <= n) && 10 <= m)) || ((((56 <= k && 10 <= n) && i + 5 <= n) && 10 <= m) && j + 4 <= m)) || ((((j + 5 <= m && i + 8 <= n) && 10 <= n) && 10 <= m) && 25 <= k)) || ((((10 <= n && 71 <= k) && 10 <= m) && j + 9 <= m) && i + 3 <= n)) || ((((j + 6 <= m && i + 8 <= n) && 10 <= n) && 10 <= m) && 24 <= k)) || ((((10 <= n && 10 <= m) && i + 7 <= n) && 36 <= k) && j + 4 <= m)) || ((((j + 8 <= m && 10 <= n) && 10 <= m) && i + 2 <= n) && 82 <= k)) || ((((69 <= k && j + 1 <= m) && 10 <= n) && 10 <= m) && i + 4 <= n)) || ((((33 <= k && 10 <= n) && 10 <= m) && i + 7 <= n) && j + 7 <= m)) || ((((10 <= n && j + 3 <= m) && 10 <= m) && i + 9 <= n) && 17 <= k)) || ((((j + 10 <= m && 10 <= n) && i + 5 <= n) && 10 <= m) && 50 <= k)) || ((((j + 8 <= m && 10 <= n) && i + 5 <= n) && 52 <= k) && 10 <= m)) || ((((i + 8 <= n && j + 1 <= m) && 10 <= n) && 29 <= k) && 10 <= m)) || (((10 <= n && 40 <= k) && 10 <= m) && i + 7 <= n)) || ((((91 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j + 9 <= m)) || ((((98 <= k && 10 <= n) && i + 1 <= n) && j + 2 <= m) && 10 <= m)) || ((((10 <= n && 10 <= m) && i + 4 <= n) && 66 <= k) && j + 4 <= m)) || ((((10 <= n && 8 <= k) && j + 2 <= m) && i + 10 <= n) && 10 <= m)) || ((((j + 8 <= m && 10 <= n) && 12 <= k) && 10 <= m) && i + 9 <= n)) || ((((j + 1 <= m && 10 <= n) && 10 <= m) && i + 2 <= n) && 89 <= k)) || ((((10 <= n && 87 <= k) && j + 3 <= m) && 10 <= m) && i + 2 <= n)) || ((((37 <= k && 10 <= n) && j + 3 <= m) && 10 <= m) && i + 7 <= n)) || ((((10 <= n && j + 3 <= m) && i + 6 <= n) && 10 <= m) && 47 <= k)) || ((((96 <= k && 10 <= n) && i + 1 <= n) && 10 <= m) && j + 4 <= m)) || ((((j + 6 <= m && 10 <= n) && i + 5 <= n) && 54 <= k) && 10 <= m)) || ((((10 <= n && i + 5 <= n) && j + 3 <= m) && 57 <= k) && 10 <= m)) || ((((j + 5 <= m && 10 <= n) && 10 <= m) && i + 3 <= n) && 75 <= k)) || ((((i + 8 <= n && 26 <= k) && 10 <= n) && 10 <= m) && j + 4 <= m)) || ((((j + 6 <= m && 10 <= n) && 10 <= m) && 84 <= k) && i + 2 <= n)) || ((((10 <= n && 10 <= m) && j + 9 <= m) && i + 9 <= n) && 11 <= k)) || ((((77 <= k && 10 <= n) && j + 3 <= m) && 10 <= m) && i + 3 <= n)) || ((((10 <= n && 41 <= k) && 10 <= m) && i + 6 <= n) && j + 9 <= m)) || (((10 <= n && i + 6 <= n) && 10 <= m) && 50 <= k)) || ((((10 <= n && j + 10 <= m) && 0 <= k) && i + 10 <= n) && 10 <= m)) || ((((i + 8 <= n && 23 <= k) && 10 <= n) && 10 <= m) && j + 7 <= m)) || ((((10 <= n && 63 <= k) && 10 <= m) && i + 4 <= n) && j + 7 <= m)) || ((((10 <= n && 76 <= k) && 10 <= m) && i + 3 <= n) && j + 4 <= m)) || ((((51 <= k && 10 <= n) && i + 5 <= n) && 10 <= m) && j + 9 <= m)) || ((((97 <= k && 10 <= n) && j + 3 <= m) && i + 1 <= n) && 10 <= m)) || ((((j + 6 <= m && 94 <= k) && 10 <= n) && i + 1 <= n) && 10 <= m)) || ((((44 <= k && j + 6 <= m) && 10 <= n) && i + 6 <= n) && 10 <= m)) || ((((10 <= n && i + 5 <= n) && j + 2 <= m) && 10 <= m) && 58 <= k)) || ((((10 <= n && j + 2 <= m) && 10 <= m) && i + 6 <= n) && 48 <= k) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 68.2s, OverallIterations: 21, TraceHistogramMax: 100, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 86.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 952 SDslu, 2461 SDs, 0 SdLazy, 1012 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 158 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 28 PreInvPairs, 5145 NumberOfFragments, 2327 HoareAnnotationTreeSize, 28 FomulaSimplifications, 4471627 FormulaSimplificationTreeSizeReduction, 39.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 36416 FormulaSimplificationTreeSizeReductionInter, 47.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 62.7s InterpolantComputationTime, 1877 NumberOfCodeBlocks, 1877 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1856 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 18296/46190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...