/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=1.0 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:02:02,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:02:02,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:02:02,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:02:02,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:02:02,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:02:02,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:02:02,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:02:02,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:02:02,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:02:02,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:02:02,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:02:02,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:02:02,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:02:02,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:02:02,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:02:02,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:02:02,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:02:02,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:02:02,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:02:02,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:02:02,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:02:02,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:02:02,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:02:02,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:02:02,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:02:02,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:02:02,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:02:02,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:02:02,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:02:02,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:02:02,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:02:02,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:02:02,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:02:02,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:02:02,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:02:02,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:02:02,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:02:02,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:02:02,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:02:02,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:02:02,580 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 09:02:02,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:02:02,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:02:02,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:02:02,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:02:02,608 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:02:02,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:02:02,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:02:02,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:02:02,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:02:02,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:02:02,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:02:02,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:02:02,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:02:02,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:02:02,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:02:02,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:02:02,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:02:02,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:02:02,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:02:02,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:02:02,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:02:02,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:02:02,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:02:02,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:02:02,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:02:02,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:02:02,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:02:02,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:02:02,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:02:02,613 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:02:03,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:02:03,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:02:03,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:02:03,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:02:03,128 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:02:03,129 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 09:02:03,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1c78b310/d516ccc995734cf3bd2ff9594eea0da3/FLAG1e43e5a56 [2020-09-25 09:02:03,843 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:02:03,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-25 09:02:03,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1c78b310/d516ccc995734cf3bd2ff9594eea0da3/FLAG1e43e5a56 [2020-09-25 09:02:04,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1c78b310/d516ccc995734cf3bd2ff9594eea0da3 [2020-09-25 09:02:04,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:02:04,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:02:04,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:04,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:02:04,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:02:04,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:04" (1/1) ... [2020-09-25 09:02:04,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:04, skipping insertion in model container [2020-09-25 09:02:04,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:02:04" (1/1) ... [2020-09-25 09:02:04,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:02:04,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:02:04,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:04,844 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:02:05,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:02:05,070 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:02:05,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05 WrapperNode [2020-09-25 09:02:05,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:02:05,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:02:05,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:02:05,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:02:05,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (1/1) ... [2020-09-25 09:02:05,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:02:05,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:02:05,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:02:05,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:02:05,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (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 09:02:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:02:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:02:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:02:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:02:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:02:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:02:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:02:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:02:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:02:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:02:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:02:07,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:02:07,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:02:07,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:07 BoogieIcfgContainer [2020-09-25 09:02:07,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:02:07,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:02:07,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:02:07,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:02:07,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:02:04" (1/3) ... [2020-09-25 09:02:07,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:07, skipping insertion in model container [2020-09-25 09:02:07,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:02:05" (2/3) ... [2020-09-25 09:02:07,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:02:07, skipping insertion in model container [2020-09-25 09:02:07,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:02:07" (3/3) ... [2020-09-25 09:02:07,118 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-25 09:02:07,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:02:07,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:02:07,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:02:07,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:02:07,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:02:07,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:02:07,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:02:07,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:02:07,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:02:07,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:02:07,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:02:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:02:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 09:02:07,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:07,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:07,250 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:07,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:07,257 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-25 09:02:07,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:07,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 09:02:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:12,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 09:02:12,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 09:02:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 09:02:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:12,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:02:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:02:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:02:12,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:12,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:12,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:12,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:12,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:12,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 09:02:12,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:12,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:12,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:12,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:12,967 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 09:02:12,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 09:02:12,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:12,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:02:12,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997064337] [2020-09-25 09:02:12,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:02:12,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:12,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:02:13,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:02:13,004 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:02:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:15,726 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 09:02:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:02:15,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-09-25 09:02:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:15,755 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 09:02:15,755 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 09:02:15,767 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 09:02:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 09:02:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 09:02:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 09:02:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 09:02:15,921 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 134 [2020-09-25 09:02:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:15,923 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 09:02:15,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:02:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 09:02:15,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 09:02:15,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:15,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:15,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:02:15,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:15,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1174704491, now seen corresponding path program 1 times [2020-09-25 09:02:15,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:15,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106329064] [2020-09-25 09:02:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:20,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:21,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 09:02:21,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:02:21,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:02:21,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:21,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:21,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:02:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:02:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 09:02:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:02:21,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:21,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:21,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:02:21,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:21,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:02:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:21,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:21,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:21,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:02:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:02:21,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:21,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:21,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:02:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:02:21,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106329064] [2020-09-25 09:02:21,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:21,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:02:21,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70684996] [2020-09-25 09:02:21,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:02:21,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:21,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:02:21,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:02:21,308 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 6 states. [2020-09-25 09:02:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:23,562 INFO L93 Difference]: Finished difference Result 1612 states and 2074 transitions. [2020-09-25 09:02:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:02:23,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-09-25 09:02:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:23,574 INFO L225 Difference]: With dead ends: 1612 [2020-09-25 09:02:23,574 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 09:02:23,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 09:02:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2020-09-25 09:02:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 09:02:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1216 transitions. [2020-09-25 09:02:23,616 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1216 transitions. Word has length 152 [2020-09-25 09:02:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:23,617 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1216 transitions. [2020-09-25 09:02:23,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:02:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1216 transitions. [2020-09-25 09:02:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 09:02:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:23,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:23,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:02:23,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1494713866, now seen corresponding path program 1 times [2020-09-25 09:02:23,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:23,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583500970] [2020-09-25 09:02:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:23,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:28,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:28,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:02:28,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-09-25 09:02:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:28,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:02:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:02:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 09:02:28,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:28,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:28,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:28,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 09:02:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:28,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:02:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:29,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:29,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:02:29,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:29,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 09:02:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:29,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:29,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:02:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:02:29,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583500970] [2020-09-25 09:02:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:02:29,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:02:29,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46032327] [2020-09-25 09:02:29,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:02:29,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:29,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:02:29,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:29,245 INFO L87 Difference]: Start difference. First operand 965 states and 1216 transitions. Second operand 8 states. [2020-09-25 09:02:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:32,973 INFO L93 Difference]: Finished difference Result 3363 states and 4532 transitions. [2020-09-25 09:02:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:02:32,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 178 [2020-09-25 09:02:32,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:32,992 INFO L225 Difference]: With dead ends: 3363 [2020-09-25 09:02:32,992 INFO L226 Difference]: Without dead ends: 2420 [2020-09-25 09:02:32,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:02:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2020-09-25 09:02:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2323. [2020-09-25 09:02:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2020-09-25 09:02:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3006 transitions. [2020-09-25 09:02:33,119 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3006 transitions. Word has length 178 [2020-09-25 09:02:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:33,120 INFO L479 AbstractCegarLoop]: Abstraction has 2323 states and 3006 transitions. [2020-09-25 09:02:33,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:02:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3006 transitions. [2020-09-25 09:02:33,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 09:02:33,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:33,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:02:33,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:02:33,142 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash 652889428, now seen corresponding path program 1 times [2020-09-25 09:02:33,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:33,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590075020] [2020-09-25 09:02:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 09:02:38,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:02:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:02:38,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:02:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 09:02:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:02:38,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:38,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:38,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:02:38,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:38,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:38,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:38,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:38,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:02:38,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:02:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:38,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:02:38,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 09:02:38,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:38,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:38,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:02:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:02:38,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:02:38,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590075020] [2020-09-25 09:02:38,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:38,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:02:38,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292050409] [2020-09-25 09:02:38,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:02:38,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:02:38,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:02:38,937 INFO L87 Difference]: Start difference. First operand 2323 states and 3006 transitions. Second operand 9 states. [2020-09-25 09:02:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:43,128 INFO L93 Difference]: Finished difference Result 6894 states and 9294 transitions. [2020-09-25 09:02:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:02:43,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 190 [2020-09-25 09:02:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:43,154 INFO L225 Difference]: With dead ends: 6894 [2020-09-25 09:02:43,154 INFO L226 Difference]: Without dead ends: 4407 [2020-09-25 09:02:43,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:02:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-09-25 09:02:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4188. [2020-09-25 09:02:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4188 states. [2020-09-25 09:02:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 5275 transitions. [2020-09-25 09:02:43,297 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 5275 transitions. Word has length 190 [2020-09-25 09:02:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:43,298 INFO L479 AbstractCegarLoop]: Abstraction has 4188 states and 5275 transitions. [2020-09-25 09:02:43,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:02:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 5275 transitions. [2020-09-25 09:02:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 09:02:43,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:43,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:02:43,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:43,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1041104034, now seen corresponding path program 1 times [2020-09-25 09:02:43,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:43,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022214486] [2020-09-25 09:02:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:45,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:48,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 09:02:48,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:48,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 09:02:48,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:48,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 09:02:48,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 09:02:48,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:48,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:02:48,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:02:48,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:48,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:48,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:02:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:48,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:02:48,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:48,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:02:48,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:48,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:48,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:02:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:02:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 09:02:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:48,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 09:02:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:02:48,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022214486] [2020-09-25 09:02:48,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:48,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:02:48,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642810452] [2020-09-25 09:02:48,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:02:48,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:48,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:02:48,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:02:48,688 INFO L87 Difference]: Start difference. First operand 4188 states and 5275 transitions. Second operand 5 states. [2020-09-25 09:02:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:50,696 INFO L93 Difference]: Finished difference Result 9432 states and 12118 transitions. [2020-09-25 09:02:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:02:50,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2020-09-25 09:02:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:50,728 INFO L225 Difference]: With dead ends: 9432 [2020-09-25 09:02:50,729 INFO L226 Difference]: Without dead ends: 5266 [2020-09-25 09:02:50,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 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 09:02:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2020-09-25 09:02:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 4490. [2020-09-25 09:02:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4490 states. [2020-09-25 09:02:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5729 transitions. [2020-09-25 09:02:50,871 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5729 transitions. Word has length 196 [2020-09-25 09:02:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:50,872 INFO L479 AbstractCegarLoop]: Abstraction has 4490 states and 5729 transitions. [2020-09-25 09:02:50,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:02:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5729 transitions. [2020-09-25 09:02:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 09:02:50,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:50,890 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, 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] [2020-09-25 09:02:50,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:50,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1234844570, now seen corresponding path program 1 times [2020-09-25 09:02:50,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:50,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999175030] [2020-09-25 09:02:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:51,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking...