/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=SMALLEST --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_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:37,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:37,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:37,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:37,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:37,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:37,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:37,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:37,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:37,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:37,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:37,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:37,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:37,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:37,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:37,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:37,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:37,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:37,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:37,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:37,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:37,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:37,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:37,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:37,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:37,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:37,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:37,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:37,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:37,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:37,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:37,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:37,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:37,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:37,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:37,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:37,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:37,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:37,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:37,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:37,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:37,506 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 [2020-09-24 18:22:37,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:37,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:37,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:37,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:37,559 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:37,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:37,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:37,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:37,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:37,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:37,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:37,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:37,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:37,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:37,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:37,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:37,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:37,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:37,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:37,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:37,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:37,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:37,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:37,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:37,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:37,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:37,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:37,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:37,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:37,566 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:22:38,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:38,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:38,026 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:38,028 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:38,029 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:38,030 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-24 18:22:38,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5748039e4/aea2c342da9741bab3221fca37af8182/FLAG0876dafe4 [2020-09-24 18:22:38,788 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:38,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-24 18:22:38,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5748039e4/aea2c342da9741bab3221fca37af8182/FLAG0876dafe4 [2020-09-24 18:22:39,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5748039e4/aea2c342da9741bab3221fca37af8182 [2020-09-24 18:22:39,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:39,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:39,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:39,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:39,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:39,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19617743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39, skipping insertion in model container [2020-09-24 18:22:39,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:39,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:39,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:39,602 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:39,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:39,846 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:39,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39 WrapperNode [2020-09-24 18:22:39,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:39,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:39,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:39,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:39,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (1/1) ... [2020-09-24 18:22:39,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:39,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:39,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:39,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:39,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (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 [2020-09-24 18:22:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:41,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:41,475 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:41,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:41 BoogieIcfgContainer [2020-09-24 18:22:41,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:41,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:41,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:41,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:41,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:39" (1/3) ... [2020-09-24 18:22:41,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42046f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:41, skipping insertion in model container [2020-09-24 18:22:41,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:39" (2/3) ... [2020-09-24 18:22:41,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42046f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:41, skipping insertion in model container [2020-09-24 18:22:41,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:41" (3/3) ... [2020-09-24 18:22:41,506 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-24 18:22:41,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:41,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:41,561 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:41,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:41,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:41,606 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:41,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:41,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:41,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:41,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:41,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 18:22:41,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:41,689 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] [2020-09-24 18:22:41,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:41,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-24 18:22:41,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:41,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288200686] [2020-09-24 18:22:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:42,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:46,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 18:22:46,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:22:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 18:22:46,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:46,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:22:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 18:22:46,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:22:47,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:47,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:47,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:47,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:22:47,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:22:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:47,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288200686] [2020-09-24 18:22:47,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:47,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:47,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683033045] [2020-09-24 18:22:47,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:47,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:47,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:47,400 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:49,560 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 18:22:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:49,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-24 18:22:49,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:49,594 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 18:22:49,594 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 18:22:49,604 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 [2020-09-24 18:22:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 18:22:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 18:22:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 18:22:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-24 18:22:49,706 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 124 [2020-09-24 18:22:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:49,708 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-24 18:22:49,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-24 18:22:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 18:22:49,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:49,717 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] [2020-09-24 18:22:49,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:49,718 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash 180693394, now seen corresponding path program 1 times [2020-09-24 18:22:49,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:49,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296925255] [2020-09-24 18:22:49,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:54,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 18:22:54,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:22:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:22:54,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:22:54,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 18:22:54,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:22:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:22:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:22:55,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:22:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:55,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296925255] [2020-09-24 18:22:55,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:55,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:55,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836231688] [2020-09-24 18:22:55,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:55,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:55,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:55,126 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-24 18:22:57,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:57,205 INFO L93 Difference]: Finished difference Result 1521 states and 2021 transitions. [2020-09-24 18:22:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:57,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-24 18:22:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:57,218 INFO L225 Difference]: With dead ends: 1521 [2020-09-24 18:22:57,219 INFO L226 Difference]: Without dead ends: 930 [2020-09-24 18:22:57,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-09-24 18:22:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 917. [2020-09-24 18:22:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-09-24 18:22:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1188 transitions. [2020-09-24 18:22:57,284 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1188 transitions. Word has length 150 [2020-09-24 18:22:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:57,285 INFO L479 AbstractCegarLoop]: Abstraction has 917 states and 1188 transitions. [2020-09-24 18:22:57,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1188 transitions. [2020-09-24 18:22:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 18:22:57,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:57,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:57,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:57,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:57,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1775646540, now seen corresponding path program 1 times [2020-09-24 18:22:57,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:57,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795257756] [2020-09-24 18:22:57,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:01,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 18:23:01,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:01,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3688 [2020-09-24 18:23:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 18:23:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 18:23:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:01,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:01,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:23:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:01,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:01,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:01,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:23:01,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:23:01,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:01,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 18:23:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:01,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795257756] [2020-09-24 18:23:01,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:01,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:23:01,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702245427] [2020-09-24 18:23:01,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:23:01,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:23:01,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:23:01,357 INFO L87 Difference]: Start difference. First operand 917 states and 1188 transitions. Second operand 6 states. [2020-09-24 18:23:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:04,160 INFO L93 Difference]: Finished difference Result 2772 states and 3826 transitions. [2020-09-24 18:23:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:23:04,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 18:23:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:04,177 INFO L225 Difference]: With dead ends: 2772 [2020-09-24 18:23:04,177 INFO L226 Difference]: Without dead ends: 1877 [2020-09-24 18:23:04,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:23:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2020-09-24 18:23:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1830. [2020-09-24 18:23:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1830 states. [2020-09-24 18:23:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2346 transitions. [2020-09-24 18:23:04,276 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2346 transitions. Word has length 158 [2020-09-24 18:23:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:04,282 INFO L479 AbstractCegarLoop]: Abstraction has 1830 states and 2346 transitions. [2020-09-24 18:23:04,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:23:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2346 transitions. [2020-09-24 18:23:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 18:23:04,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:04,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:04,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:23:04,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:04,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1487586036, now seen corresponding path program 1 times [2020-09-24 18:23:04,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:04,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992398425] [2020-09-24 18:23:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:05,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-24 18:23:05,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:23:05,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-24 18:23:05,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:23:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:23:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:23:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:05,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:23:05,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:23:05,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:05,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:23:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 18:23:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:23:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:05,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:05,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992398425] [2020-09-24 18:23:05,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:23:05,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:23:05,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308700317] [2020-09-24 18:23:05,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:05,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:05,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:05,682 INFO L87 Difference]: Start difference. First operand 1830 states and 2346 transitions. Second operand 7 states. [2020-09-24 18:23:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:08,161 INFO L93 Difference]: Finished difference Result 5206 states and 6907 transitions. [2020-09-24 18:23:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:23:08,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-24 18:23:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:08,193 INFO L225 Difference]: With dead ends: 5206 [2020-09-24 18:23:08,193 INFO L226 Difference]: Without dead ends: 3398 [2020-09-24 18:23:08,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:23:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2020-09-24 18:23:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 3325. [2020-09-24 18:23:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3325 states. [2020-09-24 18:23:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4339 transitions. [2020-09-24 18:23:08,320 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4339 transitions. Word has length 193 [2020-09-24 18:23:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:08,320 INFO L479 AbstractCegarLoop]: Abstraction has 3325 states and 4339 transitions. [2020-09-24 18:23:08,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4339 transitions. [2020-09-24 18:23:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-24 18:23:08,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:08,336 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] [2020-09-24 18:23:08,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:23:08,337 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash -779908078, now seen corresponding path program 1 times [2020-09-24 18:23:08,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:08,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499411688] [2020-09-24 18:23:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:13,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:13,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:23:13,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 18:23:13,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:13,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:13,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:13,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:13,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:13,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:23:13,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 18:23:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:23:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:23:13,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499411688] [2020-09-24 18:23:13,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:13,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:23:13,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064041646] [2020-09-24 18:23:13,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:23:13,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:13,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:23:13,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:23:13,773 INFO L87 Difference]: Start difference. First operand 3325 states and 4339 transitions. Second operand 5 states. [2020-09-24 18:23:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:15,996 INFO L93 Difference]: Finished difference Result 8315 states and 11153 transitions. [2020-09-24 18:23:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:23:16,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-09-24 18:23:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:16,034 INFO L225 Difference]: With dead ends: 8315 [2020-09-24 18:23:16,034 INFO L226 Difference]: Without dead ends: 5012 [2020-09-24 18:23:16,048 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 [2020-09-24 18:23:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2020-09-24 18:23:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 4553. [2020-09-24 18:23:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2020-09-24 18:23:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 5849 transitions. [2020-09-24 18:23:16,191 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 5849 transitions. Word has length 208 [2020-09-24 18:23:16,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:16,191 INFO L479 AbstractCegarLoop]: Abstraction has 4553 states and 5849 transitions. [2020-09-24 18:23:16,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:23:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 5849 transitions. [2020-09-24 18:23:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-24 18:23:16,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:16,216 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, 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] [2020-09-24 18:23:16,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:16,217 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1819143480, now seen corresponding path program 1 times [2020-09-24 18:23:16,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:16,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423880620] [2020-09-24 18:23:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3405 [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:23:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:19,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:23:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:19,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:23:19,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:23:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:19,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:23:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:23:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 18:23:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:23:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:19,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423880620] [2020-09-24 18:23:19,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:19,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:19,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106285319] [2020-09-24 18:23:19,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:19,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:19,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:19,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:19,979 INFO L87 Difference]: Start difference. First operand 4553 states and 5849 transitions. Second operand 7 states. [2020-09-24 18:23:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:23,379 INFO L93 Difference]: Finished difference Result 9670 states and 13069 transitions. [2020-09-24 18:23:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:23,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-09-24 18:23:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:23,410 INFO L225 Difference]: With dead ends: 9670 [2020-09-24 18:23:23,410 INFO L226 Difference]: Without dead ends: 5139 [2020-09-24 18:23:23,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2020-09-24 18:23:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 4651. [2020-09-24 18:23:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2020-09-24 18:23:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 5610 transitions. [2020-09-24 18:23:23,590 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 5610 transitions. Word has length 211 [2020-09-24 18:23:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:23,590 INFO L479 AbstractCegarLoop]: Abstraction has 4651 states and 5610 transitions. [2020-09-24 18:23:23,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 5610 transitions. [2020-09-24 18:23:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-24 18:23:23,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:23,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-24 18:23:23,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:23:23,611 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash 549832139, now seen corresponding path program 1 times [2020-09-24 18:23:23,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:23,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916863831] [2020-09-24 18:23:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:23,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:23,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking...