/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/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:31,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:31,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:31,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:31,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:31,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:31,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:31,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:31,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:31,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:31,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:31,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:31,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:31,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:31,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:31,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:31,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:31,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:31,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:31,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:31,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:31,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:31,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:31,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:31,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:31,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:31,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:31,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:31,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:31,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:31,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:31,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:31,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:31,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:31,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:31,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:31,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:31,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:31,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:31,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:31,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:31,485 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 08:59:31,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:31,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:31,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:31,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:31,541 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:31,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:31,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:31,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:31,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:31,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:31,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:31,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:31,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:31,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:31,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:31,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:31,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:31,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:31,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:31,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:31,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:31,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:31,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:31,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:31,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:31,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:31,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:31,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:31,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:31,548 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 08:59:32,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:32,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:32,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:32,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:32,035 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:32,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 08:59:32,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be2e536b8/2cfb3e0d21a349a997fcde8191f65fd4/FLAG01046b675 [2020-09-25 08:59:32,828 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:32,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 08:59:32,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be2e536b8/2cfb3e0d21a349a997fcde8191f65fd4/FLAG01046b675 [2020-09-25 08:59:33,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be2e536b8/2cfb3e0d21a349a997fcde8191f65fd4 [2020-09-25 08:59:33,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:33,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:33,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:33,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:33,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:33,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1265ef6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33, skipping insertion in model container [2020-09-25 08:59:33,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:33,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:33,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:33,653 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:33,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:33,881 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:33,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33 WrapperNode [2020-09-25 08:59:33,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:33,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:33,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:33,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:33,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:33,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:34,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (1/1) ... [2020-09-25 08:59:34,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:34,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:34,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:34,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:34,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (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 08:59:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 08:59:34,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 08:59:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:34,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:34,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:34,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:35,485 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:35,485 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:59:35,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:35 BoogieIcfgContainer [2020-09-25 08:59:35,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:35,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:35,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:35,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:35,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:33" (1/3) ... [2020-09-25 08:59:35,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71723820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:35, skipping insertion in model container [2020-09-25 08:59:35,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:33" (2/3) ... [2020-09-25 08:59:35,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71723820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:35, skipping insertion in model container [2020-09-25 08:59:35,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:35" (3/3) ... [2020-09-25 08:59:35,506 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 08:59:35,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:35,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:35,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:35,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:35,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:35,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:35,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:35,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:35,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:35,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:35,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 08:59:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 08:59:35,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:35,644 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, 1, 1] [2020-09-25 08:59:35,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 08:59:35,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:35,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395527092] [2020-09-25 08:59:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 08:59:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:59:40,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 08:59:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:40,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:59:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 08:59:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:59:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:41,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:41,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:41,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 08:59:41,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:41,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:59:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:41,411 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 08:59:41,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395527092] [2020-09-25 08:59:41,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:41,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:41,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475237232] [2020-09-25 08:59:41,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:41,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:41,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:41,448 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 08:59:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:44,095 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 08:59:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:44,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 08:59:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:44,125 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 08:59:44,126 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 08:59:44,135 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 08:59:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 08:59:44,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 08:59:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 08:59:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 08:59:44,252 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 08:59:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:44,254 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 08:59:44,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 08:59:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 08:59:44,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:44,265 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:44,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:44,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:44,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 08:59:44,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:44,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115766587] [2020-09-25 08:59:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:47,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 08:59:49,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:59:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 08:59:49,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:49,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 08:59:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 08:59:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:59:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:49,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:49,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 08:59:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:49,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 08:59:49,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:49,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:59:49,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:49,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:49,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:49,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:59:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:49,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115766587] [2020-09-25 08:59:49,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:49,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:59:49,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428160065] [2020-09-25 08:59:49,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:59:49,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:49,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:59:49,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:49,721 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 08:59:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:52,659 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 08:59:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:52,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 08:59:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:52,675 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 08:59:52,675 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 08:59:52,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 08:59:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 08:59:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 08:59:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 08:59:52,742 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 08:59:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:52,746 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 08:59:52,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:59:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 08:59:52,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 08:59:52,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:52,770 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:52,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:52,770 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:52,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:52,774 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 08:59:52,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:52,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535946765] [2020-09-25 08:59:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:52,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 08:59:57,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 08:59:57,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 08:59:57,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 08:59:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 08:59:57,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 08:59:57,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:59:57,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:57,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 08:59:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 08:59:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 08:59:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:58,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535946765] [2020-09-25 08:59:58,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:58,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 08:59:58,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87093217] [2020-09-25 08:59:58,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:59:58,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:58,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:59:58,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:58,147 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 09:00:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:00,647 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 09:00:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:00,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 09:00:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:00,673 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 09:00:00,674 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 09:00:00,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 09:00:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 09:00:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 09:00:00,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 09:00:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 09:00:00,748 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 09:00:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:00,749 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 09:00:00,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 09:00:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 09:00:00,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:00,762 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:00,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:00,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:00,763 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 09:00:00,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:00,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982969383] [2020-09-25 09:00:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:05,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 09:00:05,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:00:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:00:05,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:05,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:05,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:05,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:05,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:00:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:05,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:05,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:00:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:06,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:06,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:00:06,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 09:00:06,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:06,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:06,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:06,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:00:06,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982969383] [2020-09-25 09:00:06,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:06,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:00:06,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121872230] [2020-09-25 09:00:06,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:06,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:06,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:06,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:06,137 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 7 states. [2020-09-25 09:00:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:08,528 INFO L93 Difference]: Finished difference Result 4195 states and 5288 transitions. [2020-09-25 09:00:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:00:08,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 09:00:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:08,557 INFO L225 Difference]: With dead ends: 4195 [2020-09-25 09:00:08,557 INFO L226 Difference]: Without dead ends: 2675 [2020-09-25 09:00:08,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2020-09-25 09:00:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 2420. [2020-09-25 09:00:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-25 09:00:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3024 transitions. [2020-09-25 09:00:08,669 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3024 transitions. Word has length 182 [2020-09-25 09:00:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:08,670 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 3024 transitions. [2020-09-25 09:00:08,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3024 transitions. [2020-09-25 09:00:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 09:00:08,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:08,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:08,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:08,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:08,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:08,687 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 09:00:08,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:08,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269351636] [2020-09-25 09:00:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:00:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:00:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:00:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 09:00:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 09:00:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:13,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:13,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:13,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:00:13,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:13,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:13,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:13,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:00:13,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:13,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 09:00:13,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:13,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:13,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:13,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:00:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:14,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269351636] [2020-09-25 09:00:14,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:14,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:14,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704480978] [2020-09-25 09:00:14,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:14,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:14,042 INFO L87 Difference]: Start difference. First operand 2420 states and 3024 transitions. Second operand 5 states. [2020-09-25 09:00:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:15,813 INFO L93 Difference]: Finished difference Result 5068 states and 6329 transitions. [2020-09-25 09:00:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:15,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 09:00:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:15,833 INFO L225 Difference]: With dead ends: 5068 [2020-09-25 09:00:15,833 INFO L226 Difference]: Without dead ends: 2672 [2020-09-25 09:00:15,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 09:00:15,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2020-09-25 09:00:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2136. [2020-09-25 09:00:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-09-25 09:00:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 2571 transitions. [2020-09-25 09:00:15,931 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 2571 transitions. Word has length 183 [2020-09-25 09:00:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:15,932 INFO L479 AbstractCegarLoop]: Abstraction has 2136 states and 2571 transitions. [2020-09-25 09:00:15,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:15,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 2571 transitions. [2020-09-25 09:00:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 09:00:15,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:15,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:15,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:15,943 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:15,943 INFO L82 PathProgramCache]: Analyzing trace with hash -777703907, now seen corresponding path program 1 times [2020-09-25 09:00:15,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:15,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489531636] [2020-09-25 09:00:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking...