/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/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:25,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:25,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:25,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:25,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:25,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:25,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:25,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:25,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:25,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:25,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:25,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:25,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:25,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:25,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:25,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:25,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:25,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:25,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:25,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:25,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:25,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:25,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:25,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:25,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:25,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:25,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:25,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:25,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:25,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:25,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:25,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:25,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:25,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:25,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:25,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:25,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:25,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:25,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:25,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:25,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:25,383 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 18:19:25,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:25,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:25,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:25,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:25,423 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:25,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:25,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:25,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:25,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:25,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:25,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:25,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:25,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:25,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:25,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:25,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:25,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:25,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:25,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:25,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:25,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:25,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:25,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:25,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:25,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:25,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:25,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:25,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:25,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:25,430 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 18:19:25,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:25,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:25,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:25,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:25,943 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:25,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 18:19:26,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e437cffa6/33cf22e8aef346fe97dd62624a3c58d3/FLAG80aeae6db [2020-09-24 18:19:26,697 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:26,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 18:19:26,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e437cffa6/33cf22e8aef346fe97dd62624a3c58d3/FLAG80aeae6db [2020-09-24 18:19:26,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e437cffa6/33cf22e8aef346fe97dd62624a3c58d3 [2020-09-24 18:19:26,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:26,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:26,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:26,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:26,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:26,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:26" (1/1) ... [2020-09-24 18:19:26,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:26, skipping insertion in model container [2020-09-24 18:19:26,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:26" (1/1) ... [2020-09-24 18:19:26,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:27,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:27,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:27,554 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:27,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:27,802 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:27,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27 WrapperNode [2020-09-24 18:19:27,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:27,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:27,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:27,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:27,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (1/1) ... [2020-09-24 18:19:27,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:27,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:27,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:27,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:27,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (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 18:19:28,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:28,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:29,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:29,411 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:29,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:29 BoogieIcfgContainer [2020-09-24 18:19:29,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:29,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:29,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:29,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:29,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:26" (1/3) ... [2020-09-24 18:19:29,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6c5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:29, skipping insertion in model container [2020-09-24 18:19:29,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:27" (2/3) ... [2020-09-24 18:19:29,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6c5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:29, skipping insertion in model container [2020-09-24 18:19:29,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:29" (3/3) ... [2020-09-24 18:19:29,433 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-24 18:19:29,446 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:29,465 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:29,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:29,537 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:29,538 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:29,538 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:29,538 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:29,538 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:29,538 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:29,539 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:29,539 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 18:19:29,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:29,604 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, 1, 1, 1, 1, 1] [2020-09-24 18:19:29,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:29,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:29,611 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-24 18:19:29,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:29,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753788356] [2020-09-24 18:19:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:34,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 18:19:34,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:19:34,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-24 18:19:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:19:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 18:19:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:19:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:35,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:35,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:35,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:19:35,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:35,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:19:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:35,344 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 18:19:35,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753788356] [2020-09-24 18:19:35,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:35,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:35,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111997294] [2020-09-24 18:19:35,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:35,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:35,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:35,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:35,407 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:37,495 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-24 18:19:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:37,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-24 18:19:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:37,540 INFO L225 Difference]: With dead ends: 1268 [2020-09-24 18:19:37,540 INFO L226 Difference]: Without dead ends: 694 [2020-09-24 18:19:37,553 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 18:19:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-24 18:19:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-24 18:19:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:19:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:19:37,685 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-24 18:19:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:37,687 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:19:37,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:19:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 18:19:37,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:37,702 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-24 18:19:37,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:37,703 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:37,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:37,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-24 18:19:37,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:37,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712934542] [2020-09-24 18:19:37,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:19:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 18:19:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:19:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:19:42,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:19:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:42,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:19:42,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:42,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:42,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:42,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:42,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:42,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:19:42,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:42,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:42,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:43,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712934542] [2020-09-24 18:19:43,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:43,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:19:43,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894275079] [2020-09-24 18:19:43,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:43,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:43,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:43,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:43,043 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 18:19:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:45,346 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-24 18:19:45,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:45,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-24 18:19:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:45,364 INFO L225 Difference]: With dead ends: 1591 [2020-09-24 18:19:45,364 INFO L226 Difference]: Without dead ends: 1012 [2020-09-24 18:19:45,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-24 18:19:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-24 18:19:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-24 18:19:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-24 18:19:45,460 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 162 [2020-09-24 18:19:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:45,462 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-24 18:19:45,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-24 18:19:45,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 18:19:45,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:45,469 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:45,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:45,470 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:45,470 INFO L82 PathProgramCache]: Analyzing trace with hash 127836767, now seen corresponding path program 1 times [2020-09-24 18:19:45,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:45,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435828222] [2020-09-24 18:19:45,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:50,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 18:19:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:19:50,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:19:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:19:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:50,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:50,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:19:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:19:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:50,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:50,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:19:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:19:50,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:50,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:19:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:50,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435828222] [2020-09-24 18:19:50,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:50,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:19:50,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947829822] [2020-09-24 18:19:50,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:19:50,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:50,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:19:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:19:50,790 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 8 states. [2020-09-24 18:19:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:53,871 INFO L93 Difference]: Finished difference Result 3165 states and 4132 transitions. [2020-09-24 18:19:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:19:53,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-24 18:19:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:53,892 INFO L225 Difference]: With dead ends: 3165 [2020-09-24 18:19:53,892 INFO L226 Difference]: Without dead ends: 2223 [2020-09-24 18:19:53,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:19:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-24 18:19:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2068. [2020-09-24 18:19:53,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-09-24 18:19:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2597 transitions. [2020-09-24 18:19:54,004 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2597 transitions. Word has length 163 [2020-09-24 18:19:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:54,008 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2597 transitions. [2020-09-24 18:19:54,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:19:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2597 transitions. [2020-09-24 18:19:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 18:19:54,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:54,022 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:54,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:54,023 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:54,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1373458601, now seen corresponding path program 1 times [2020-09-24 18:19:54,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:54,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330178878] [2020-09-24 18:19:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:54,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 18:19:59,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:19:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:19:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:19:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:59,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:59,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:19:59,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:59,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:59,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:19:59,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:59,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:59,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:19:59,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:59,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:19:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:59,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:59,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:19:59,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:19:59,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:59,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330178878] [2020-09-24 18:19:59,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:59,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:19:59,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24618884] [2020-09-24 18:19:59,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:59,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:59,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:59,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:59,479 INFO L87 Difference]: Start difference. First operand 2068 states and 2597 transitions. Second operand 7 states. [2020-09-24 18:20:01,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:01,905 INFO L93 Difference]: Finished difference Result 5688 states and 7382 transitions. [2020-09-24 18:20:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:20:01,906 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-24 18:20:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:01,927 INFO L225 Difference]: With dead ends: 5688 [2020-09-24 18:20:01,928 INFO L226 Difference]: Without dead ends: 3644 [2020-09-24 18:20:01,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 18:20:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-09-24 18:20:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3522. [2020-09-24 18:20:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3522 states. [2020-09-24 18:20:02,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 4415 transitions. [2020-09-24 18:20:02,060 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 4415 transitions. Word has length 193 [2020-09-24 18:20:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:02,061 INFO L479 AbstractCegarLoop]: Abstraction has 3522 states and 4415 transitions. [2020-09-24 18:20:02,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 4415 transitions. [2020-09-24 18:20:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 18:20:02,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:02,078 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:02,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:02,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:02,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1171514507, now seen corresponding path program 1 times [2020-09-24 18:20:02,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:02,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435599258] [2020-09-24 18:20:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:07,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:20:07,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:20:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 18:20:07,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:20:07,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 18:20:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:07,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:07,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:07,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:07,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:07,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:07,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:07,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:07,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:07,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:20:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:07,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:20:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:20:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 18:20:07,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:20:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:07,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435599258] [2020-09-24 18:20:07,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:07,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:07,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438873652] [2020-09-24 18:20:07,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:07,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:07,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:07,591 INFO L87 Difference]: Start difference. First operand 3522 states and 4415 transitions. Second operand 7 states. [2020-09-24 18:20:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:09,797 INFO L93 Difference]: Finished difference Result 7352 states and 9257 transitions. [2020-09-24 18:20:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:20:09,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-09-24 18:20:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:09,819 INFO L225 Difference]: With dead ends: 7352 [2020-09-24 18:20:09,819 INFO L226 Difference]: Without dead ends: 3854 [2020-09-24 18:20:09,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2020-09-24 18:20:09,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3663. [2020-09-24 18:20:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2020-09-24 18:20:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 4527 transitions. [2020-09-24 18:20:09,934 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 4527 transitions. Word has length 199 [2020-09-24 18:20:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:09,935 INFO L479 AbstractCegarLoop]: Abstraction has 3663 states and 4527 transitions. [2020-09-24 18:20:09,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 4527 transitions. [2020-09-24 18:20:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-24 18:20:09,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:09,951 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:20:09,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:09,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash 82298840, now seen corresponding path program 1 times [2020-09-24 18:20:09,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:09,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594796253] [2020-09-24 18:20:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking...