/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:54:27,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:54:27,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:54:27,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:54:27,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:54:28,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:54:28,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:54:28,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:54:28,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:54:28,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:54:28,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:54:28,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:54:28,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:54:28,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:54:28,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:54:28,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:54:28,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:54:28,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:54:28,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:54:28,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:54:28,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:54:28,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:54:28,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:54:28,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:54:28,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:54:28,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:54:28,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:54:28,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:54:28,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:54:28,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:54:28,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:54:28,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:54:28,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:54:28,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:54:28,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:54:28,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:54:28,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:54:28,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:54:28,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:54:28,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:54:28,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:54:28,060 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 [2020-09-25 07:54:28,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:54:28,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:54:28,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:54:28,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:54:28,089 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:54:28,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:54:28,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:54:28,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:54:28,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:54:28,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:54:28,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:54:28,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:54:28,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:54:28,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:54:28,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:54:28,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:54:28,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:54:28,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:54:28,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:54:28,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:54:28,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:54:28,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:54:28,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:54:28,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:54:28,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:54:28,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:54:28,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:54:28,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:54:28,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:54:28,094 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:54:28,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:54:28,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:54:28,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:54:28,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:54:28,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:54:28,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 07:54:28,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e209c2616/2f6182a47a0c44c98cc3d747fef97271/FLAG895e609ab [2020-09-25 07:54:29,438 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:54:29,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 07:54:29,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e209c2616/2f6182a47a0c44c98cc3d747fef97271/FLAG895e609ab [2020-09-25 07:54:29,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e209c2616/2f6182a47a0c44c98cc3d747fef97271 [2020-09-25 07:54:29,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:54:29,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:54:29,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:29,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:54:29,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:54:29,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d084142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:29, skipping insertion in model container [2020-09-25 07:54:29,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:54:29" (1/1) ... [2020-09-25 07:54:29,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:54:29,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:54:30,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:30,216 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:54:30,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:54:30,474 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:54:30,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30 WrapperNode [2020-09-25 07:54:30,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:54:30,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:54:30,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:54:30,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:54:30,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (1/1) ... [2020-09-25 07:54:30,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:54:30,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:54:30,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:54:30,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:54:30,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (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 [2020-09-25 07:54:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:54:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:54:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:54:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:54:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:54:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:54:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:54:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:54:30,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:54:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:54:30,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:54:32,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:54:32,030 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:54:32,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:32 BoogieIcfgContainer [2020-09-25 07:54:32,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:54:32,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:54:32,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:54:32,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:54:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:54:29" (1/3) ... [2020-09-25 07:54:32,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cafbccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:32, skipping insertion in model container [2020-09-25 07:54:32,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:54:30" (2/3) ... [2020-09-25 07:54:32,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cafbccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:54:32, skipping insertion in model container [2020-09-25 07:54:32,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:54:32" (3/3) ... [2020-09-25 07:54:32,052 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-09-25 07:54:32,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:54:32,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:54:32,104 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:54:32,141 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:54:32,141 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:54:32,142 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:54:32,142 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:54:32,142 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:54:32,142 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:54:32,142 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:54:32,143 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:54:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:54:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 07:54:32,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:32,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:32,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 632775426, now seen corresponding path program 1 times [2020-09-25 07:54:32,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:32,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391575387] [2020-09-25 07:54:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:32,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:32,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:37,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:37,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 07:54:37,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:54:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:54:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:37,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:54:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:54:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:54:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:54:37,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:37,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:54:37,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:37,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:37,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:37,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:54:37,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:37,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391575387] [2020-09-25 07:54:37,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:54:37,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:54:37,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21814310] [2020-09-25 07:54:37,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:54:37,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:37,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:54:37,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:54:37,777 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:54:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:40,283 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:54:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:54:40,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-25 07:54:40,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:40,312 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:54:40,312 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:54:40,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:54:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:54:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:54:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:54:40,439 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 115 [2020-09-25 07:54:40,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:40,441 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:54:40,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:54:40,441 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:54:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 07:54:40,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:40,449 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:40,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:54:40,450 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1507069906, now seen corresponding path program 1 times [2020-09-25 07:54:40,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:40,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178937917] [2020-09-25 07:54:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:45,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 07:54:45,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:54:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 07:54:45,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:45,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:54:45,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:54:45,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:54:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:45,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:45,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:45,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:54:45,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:45,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:45,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:45,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:45,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:45,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:45,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:54:45,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:45,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:54:45,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:45,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:54:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:45,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178937917] [2020-09-25 07:54:45,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:45,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:54:45,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582551251] [2020-09-25 07:54:45,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:54:45,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:45,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:54:45,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:54:45,780 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 07:54:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:48,746 INFO L93 Difference]: Finished difference Result 2164 states and 2805 transitions. [2020-09-25 07:54:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:54:48,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 07:54:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:48,757 INFO L225 Difference]: With dead ends: 2164 [2020-09-25 07:54:48,757 INFO L226 Difference]: Without dead ends: 1453 [2020-09-25 07:54:48,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:54:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2020-09-25 07:54:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1344. [2020-09-25 07:54:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-09-25 07:54:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1744 transitions. [2020-09-25 07:54:48,812 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1744 transitions. Word has length 133 [2020-09-25 07:54:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:48,813 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1744 transitions. [2020-09-25 07:54:48,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:54:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1744 transitions. [2020-09-25 07:54:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 07:54:48,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:48,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:48,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:54:48,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2051843805, now seen corresponding path program 1 times [2020-09-25 07:54:48,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:48,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235850722] [2020-09-25 07:54:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:53,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 07:54:53,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:54:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4383 [2020-09-25 07:54:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:53,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:54:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:54:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:54:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:54:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:53,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:53,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:54:53,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:53,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:54:53,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:53,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:53,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:54:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:54:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:54:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:54:53,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:54:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:54:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:54:53,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:54:53,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:54:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:54:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:54:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:54:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:54:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:54:53,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235850722] [2020-09-25 07:54:53,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:54:53,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:54:53,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57392655] [2020-09-25 07:54:53,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:54:53,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:54:53,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:54:53,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:54:53,527 INFO L87 Difference]: Start difference. First operand 1344 states and 1744 transitions. Second operand 5 states. [2020-09-25 07:54:55,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:54:55,589 INFO L93 Difference]: Finished difference Result 3619 states and 4959 transitions. [2020-09-25 07:54:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:54:55,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 07:54:55,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:54:55,613 INFO L225 Difference]: With dead ends: 3619 [2020-09-25 07:54:55,613 INFO L226 Difference]: Without dead ends: 2297 [2020-09-25 07:54:55,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:54:55,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-25 07:54:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1957. [2020-09-25 07:54:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-09-25 07:54:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2508 transitions. [2020-09-25 07:54:55,717 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2508 transitions. Word has length 139 [2020-09-25 07:54:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:54:55,718 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2508 transitions. [2020-09-25 07:54:55,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:54:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2508 transitions. [2020-09-25 07:54:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 07:54:55,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:54:55,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:54:55,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:54:55,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:54:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:54:55,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1993339391, now seen corresponding path program 1 times [2020-09-25 07:54:55,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:54:55,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927815262] [2020-09-25 07:54:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:54:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:54:55,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:54:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:00,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:00,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:55:00,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:55:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:00,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:00,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:55:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:00,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:00,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:00,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:00,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:00,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:00,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:00,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:00,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:00,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:00,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:00,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:00,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:00,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 07:55:00,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:55:00,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:00,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:55:01,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927815262] [2020-09-25 07:55:01,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:01,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:55:01,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898380148] [2020-09-25 07:55:01,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:01,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:01,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:01,035 INFO L87 Difference]: Start difference. First operand 1957 states and 2508 transitions. Second operand 7 states. [2020-09-25 07:55:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:02,415 INFO L93 Difference]: Finished difference Result 3900 states and 5169 transitions. [2020-09-25 07:55:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:55:02,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 07:55:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:02,435 INFO L225 Difference]: With dead ends: 3900 [2020-09-25 07:55:02,435 INFO L226 Difference]: Without dead ends: 1965 [2020-09-25 07:55:02,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:55:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-25 07:55:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1864. [2020-09-25 07:55:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2020-09-25 07:55:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2356 transitions. [2020-09-25 07:55:02,523 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2356 transitions. Word has length 152 [2020-09-25 07:55:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:02,524 INFO L479 AbstractCegarLoop]: Abstraction has 1864 states and 2356 transitions. [2020-09-25 07:55:02,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2356 transitions. [2020-09-25 07:55:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 07:55:02,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:02,531 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:02,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:02,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash 261324474, now seen corresponding path program 1 times [2020-09-25 07:55:02,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:02,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808848091] [2020-09-25 07:55:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:02,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:04,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 07:55:07,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:55:07,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:55:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 07:55:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:07,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:55:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:07,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:07,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:07,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:55:07,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:07,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:55:07,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:07,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808848091] [2020-09-25 07:55:07,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:07,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:07,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198723074] [2020-09-25 07:55:07,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:07,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:07,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:07,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:07,800 INFO L87 Difference]: Start difference. First operand 1864 states and 2356 transitions. Second operand 5 states. [2020-09-25 07:55:09,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:09,603 INFO L93 Difference]: Finished difference Result 4358 states and 5606 transitions. [2020-09-25 07:55:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:09,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 07:55:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:09,619 INFO L225 Difference]: With dead ends: 4358 [2020-09-25 07:55:09,620 INFO L226 Difference]: Without dead ends: 1853 [2020-09-25 07:55:09,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-25 07:55:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1813. [2020-09-25 07:55:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 07:55:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2233 transitions. [2020-09-25 07:55:09,681 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2233 transitions. Word has length 153 [2020-09-25 07:55:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:09,682 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2233 transitions. [2020-09-25 07:55:09,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2233 transitions. [2020-09-25 07:55:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 07:55:09,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:09,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:09,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:09,690 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1166216736, now seen corresponding path program 1 times [2020-09-25 07:55:09,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:09,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848207607] [2020-09-25 07:55:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3699 [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 07:55:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 07:55:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:13,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:13,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:13,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:13,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:13,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:13,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 07:55:13,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:55:13,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:13,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:13,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:13,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:13,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:55:13,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:13,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848207607] [2020-09-25 07:55:13,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:13,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:13,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840075215] [2020-09-25 07:55:13,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:13,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:13,710 INFO L87 Difference]: Start difference. First operand 1813 states and 2233 transitions. Second operand 5 states.