/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=1000 --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/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:07,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:07,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:07,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:07,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:07,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:07,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:07,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:07,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:07,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:07,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:07,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:07,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:07,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:07,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:07,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:07,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:07,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:07,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:07,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:07,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:07,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:07,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:07,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:07,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:07,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:07,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:07,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:07,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:07,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:07,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:07,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:07,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:07,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:07,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:07,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:07,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:07,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:07,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:07,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:07,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:07,652 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 19:29:07,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:07,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:07,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:07,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:07,709 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:07,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:07,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:07,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:07,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:07,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:07,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:07,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:07,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:07,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:07,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:07,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:07,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:07,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:07,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:07,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:07,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:07,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:07,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:07,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:07,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:07,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:07,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:07,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:07,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:07,716 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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:08,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:08,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:08,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:08,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:08,202 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:08,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-24 19:29:08,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dcddcf07/04f75d018f154c79b38f4eeebb6bca6a/FLAG3949d4690 [2020-09-24 19:29:08,935 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:29:08,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-24 19:29:08,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dcddcf07/04f75d018f154c79b38f4eeebb6bca6a/FLAG3949d4690 [2020-09-24 19:29:09,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dcddcf07/04f75d018f154c79b38f4eeebb6bca6a [2020-09-24 19:29:09,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:29:09,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:29:09,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:09,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:29:09,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:29:09,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:09" (1/1) ... [2020-09-24 19:29:09,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:09, skipping insertion in model container [2020-09-24 19:29:09,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:29:09" (1/1) ... [2020-09-24 19:29:09,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:29:09,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:29:09,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:09,846 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:29:10,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:29:10,127 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:29:10,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10 WrapperNode [2020-09-24 19:29:10,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:29:10,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:29:10,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:29:10,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:29:10,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (1/1) ... [2020-09-24 19:29:10,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:29:10,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:29:10,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:29:10,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:29:10,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (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 19:29:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:29:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:29:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:29:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:29:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:29:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:29:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:29:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:29:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:29:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:29:10,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:29:11,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:29:11,852 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:29:11,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:11 BoogieIcfgContainer [2020-09-24 19:29:11,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:29:11,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:29:11,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:29:11,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:29:11,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:29:09" (1/3) ... [2020-09-24 19:29:11,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:11, skipping insertion in model container [2020-09-24 19:29:11,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:29:10" (2/3) ... [2020-09-24 19:29:11,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:29:11, skipping insertion in model container [2020-09-24 19:29:11,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:29:11" (3/3) ... [2020-09-24 19:29:11,873 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-09-24 19:29:11,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:29:11,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:29:11,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:29:11,958 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:29:11,959 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:29:11,959 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:29:11,959 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:29:11,959 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:29:11,959 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:29:11,959 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:29:11,960 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:29:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:29:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 19:29:12,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:12,003 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] [2020-09-24 19:29:12,004 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:12,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1688264769, now seen corresponding path program 1 times [2020-09-24 19:29:12,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:12,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498190326] [2020-09-24 19:29:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:12,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:29:12,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:29:12,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-09-24 19:29:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:29:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:29:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:29:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:12,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:12,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:29:12,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:29:12,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:12,990 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 19:29:12,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498190326] [2020-09-24 19:29:12,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:12,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:29:12,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567308672] [2020-09-24 19:29:13,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:29:13,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:13,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:29:13,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:29:13,024 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:29:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:14,980 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 19:29:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:29:14,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-09-24 19:29:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:15,005 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 19:29:15,005 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 19:29:15,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 19:29:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 19:29:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 19:29:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 19:29:15,119 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 48 [2020-09-24 19:29:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:15,120 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 19:29:15,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:29:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 19:29:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-24 19:29:15,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:15,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:15,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:29:15,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1595093336, now seen corresponding path program 1 times [2020-09-24 19:29:15,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:15,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868688090] [2020-09-24 19:29:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:16,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:29:16,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:29:16,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:16,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 19:29:16,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:29:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:16,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:16,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:29:16,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:16,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:29:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 19:29:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:16,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868688090] [2020-09-24 19:29:16,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:16,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:16,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559908071] [2020-09-24 19:29:16,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:16,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:16,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:16,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:16,466 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 19:29:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:18,223 INFO L93 Difference]: Finished difference Result 1235 states and 1577 transitions. [2020-09-24 19:29:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:18,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-24 19:29:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:18,229 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 19:29:18,229 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 19:29:18,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 19:29:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 697. [2020-09-24 19:29:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 19:29:18,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 855 transitions. [2020-09-24 19:29:18,268 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 855 transitions. Word has length 128 [2020-09-24 19:29:18,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:18,269 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 855 transitions. [2020-09-24 19:29:18,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 855 transitions. [2020-09-24 19:29:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 19:29:18,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:18,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:18,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:18,275 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash 387326765, now seen corresponding path program 1 times [2020-09-24 19:29:18,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:18,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611534276] [2020-09-24 19:29:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-24 19:29:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:29:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:29:19,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 19:29:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:19,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:29:19,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:29:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:19,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 19:29:19,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:29:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:19,669 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:19,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611534276] [2020-09-24 19:29:19,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:19,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:19,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935729499] [2020-09-24 19:29:19,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:19,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:19,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:19,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:19,674 INFO L87 Difference]: Start difference. First operand 697 states and 855 transitions. Second operand 5 states. [2020-09-24 19:29:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:21,591 INFO L93 Difference]: Finished difference Result 1875 states and 2393 transitions. [2020-09-24 19:29:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:21,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-24 19:29:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:21,601 INFO L225 Difference]: With dead ends: 1875 [2020-09-24 19:29:21,601 INFO L226 Difference]: Without dead ends: 1193 [2020-09-24 19:29:21,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-09-24 19:29:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1153. [2020-09-24 19:29:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-24 19:29:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1467 transitions. [2020-09-24 19:29:21,657 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1467 transitions. Word has length 137 [2020-09-24 19:29:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:21,658 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1467 transitions. [2020-09-24 19:29:21,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1467 transitions. [2020-09-24 19:29:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 19:29:21,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:21,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:21,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:21,665 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:21,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1594398577, now seen corresponding path program 1 times [2020-09-24 19:29:21,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:21,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690454628] [2020-09-24 19:29:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:21,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 19:29:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 19:29:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-24 19:29:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 19:29:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:22,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:22,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 19:29:22,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:29:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 19:29:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:23,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690454628] [2020-09-24 19:29:23,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:23,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:23,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865683539] [2020-09-24 19:29:23,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:23,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:23,061 INFO L87 Difference]: Start difference. First operand 1153 states and 1467 transitions. Second operand 5 states. [2020-09-24 19:29:25,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:25,067 INFO L93 Difference]: Finished difference Result 3140 states and 4127 transitions. [2020-09-24 19:29:25,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:25,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-24 19:29:25,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:25,081 INFO L225 Difference]: With dead ends: 3140 [2020-09-24 19:29:25,081 INFO L226 Difference]: Without dead ends: 2002 [2020-09-24 19:29:25,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2020-09-24 19:29:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1948. [2020-09-24 19:29:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-24 19:29:25,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2540 transitions. [2020-09-24 19:29:25,150 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2540 transitions. Word has length 170 [2020-09-24 19:29:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:25,151 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2540 transitions. [2020-09-24 19:29:25,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2540 transitions. [2020-09-24 19:29:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-24 19:29:25,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:25,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:25,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:25,156 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash -198517872, now seen corresponding path program 1 times [2020-09-24 19:29:25,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:25,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648895584] [2020-09-24 19:29:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 19:29:26,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:29:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-24 19:29:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:29:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:26,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:26,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:26,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-24 19:29:26,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 19:29:26,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 19:29:26,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:26,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648895584] [2020-09-24 19:29:26,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:26,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:26,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196537458] [2020-09-24 19:29:26,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:26,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:26,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:26,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:26,544 INFO L87 Difference]: Start difference. First operand 1948 states and 2540 transitions. Second operand 5 states. [2020-09-24 19:29:28,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:28,531 INFO L93 Difference]: Finished difference Result 4357 states and 5808 transitions. [2020-09-24 19:29:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:28,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-24 19:29:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:28,546 INFO L225 Difference]: With dead ends: 4357 [2020-09-24 19:29:28,548 INFO L226 Difference]: Without dead ends: 1774 [2020-09-24 19:29:28,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-09-24 19:29:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1754. [2020-09-24 19:29:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1754 states. [2020-09-24 19:29:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2208 transitions. [2020-09-24 19:29:28,631 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2208 transitions. Word has length 175 [2020-09-24 19:29:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:28,631 INFO L479 AbstractCegarLoop]: Abstraction has 1754 states and 2208 transitions. [2020-09-24 19:29:28,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2208 transitions. [2020-09-24 19:29:28,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 19:29:28,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:28,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:29:28,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:28,643 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:28,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1838554940, now seen corresponding path program 1 times [2020-09-24 19:29:28,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:28,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877134459] [2020-09-24 19:29:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:28,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-24 19:29:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:29:29,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-24 19:29:29,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:29:29,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:29,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:29:29,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:29,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:29,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 19:29:29,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 19:29:29,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:29:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 19:29:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:30,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 19:29:30,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:30,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877134459] [2020-09-24 19:29:30,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:30,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:30,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300595778] [2020-09-24 19:29:30,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:30,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:30,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:30,455 INFO L87 Difference]: Start difference. First operand 1754 states and 2208 transitions. Second operand 7 states. [2020-09-24 19:29:32,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:32,569 INFO L93 Difference]: Finished difference Result 3551 states and 4507 transitions. [2020-09-24 19:29:32,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:32,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-24 19:29:32,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:32,580 INFO L225 Difference]: With dead ends: 3551 [2020-09-24 19:29:32,580 INFO L226 Difference]: Without dead ends: 1812 [2020-09-24 19:29:32,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 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 19:29:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-24 19:29:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1772. [2020-09-24 19:29:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-09-24 19:29:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2083 transitions. [2020-09-24 19:29:32,638 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2083 transitions. Word has length 275 [2020-09-24 19:29:32,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:32,638 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2083 transitions. [2020-09-24 19:29:32,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:32,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2083 transitions. [2020-09-24 19:29:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-09-24 19:29:32,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:32,648 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:32,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:32,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash 719832578, now seen corresponding path program 1 times [2020-09-24 19:29:32,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:32,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206645344] [2020-09-24 19:29:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-09-24 19:29:33,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:29:33,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:33,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:33,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:33,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:33,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:29:33,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:33,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-24 19:29:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 19:29:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:29:34,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:29:34,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 179 proven. 81 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 19:29:34,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206645344] [2020-09-24 19:29:34,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:34,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:34,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098137493] [2020-09-24 19:29:34,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:34,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:34,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:34,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:34,634 INFO L87 Difference]: Start difference. First operand 1772 states and 2083 transitions. Second operand 7 states. [2020-09-24 19:29:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:37,023 INFO L93 Difference]: Finished difference Result 4039 states and 4870 transitions. [2020-09-24 19:29:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:37,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 355 [2020-09-24 19:29:37,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:37,036 INFO L225 Difference]: With dead ends: 4039 [2020-09-24 19:29:37,037 INFO L226 Difference]: Without dead ends: 2282 [2020-09-24 19:29:37,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-09-24 19:29:37,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2090. [2020-09-24 19:29:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2020-09-24 19:29:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 2428 transitions. [2020-09-24 19:29:37,100 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 2428 transitions. Word has length 355 [2020-09-24 19:29:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:37,101 INFO L479 AbstractCegarLoop]: Abstraction has 2090 states and 2428 transitions. [2020-09-24 19:29:37,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 2428 transitions. [2020-09-24 19:29:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-09-24 19:29:37,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:37,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:37,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:37,113 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:37,113 INFO L82 PathProgramCache]: Analyzing trace with hash -257230739, now seen corresponding path program 1 times [2020-09-24 19:29:37,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:37,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371850871] [2020-09-24 19:29:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-09-24 19:29:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-24 19:29:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:29:38,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:29:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:38,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:38,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:38,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:29:38,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:29:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:38,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 19:29:38,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:29:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-24 19:29:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:38,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:29:38,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:29:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:38,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 186 proven. 81 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-24 19:29:39,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371850871] [2020-09-24 19:29:39,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:39,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:39,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297286807] [2020-09-24 19:29:39,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:39,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:39,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:39,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:39,029 INFO L87 Difference]: Start difference. First operand 2090 states and 2428 transitions. Second operand 7 states. [2020-09-24 19:29:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:41,399 INFO L93 Difference]: Finished difference Result 4541 states and 5389 transitions. [2020-09-24 19:29:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:41,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-09-24 19:29:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:41,412 INFO L225 Difference]: With dead ends: 4541 [2020-09-24 19:29:41,412 INFO L226 Difference]: Without dead ends: 2466 [2020-09-24 19:29:41,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2020-09-24 19:29:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2282. [2020-09-24 19:29:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-09-24 19:29:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2658 transitions. [2020-09-24 19:29:41,478 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2658 transitions. Word has length 362 [2020-09-24 19:29:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:41,478 INFO L479 AbstractCegarLoop]: Abstraction has 2282 states and 2658 transitions. [2020-09-24 19:29:41,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2658 transitions. [2020-09-24 19:29:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-09-24 19:29:41,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:41,490 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:29:41,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:41,491 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:41,491 INFO L82 PathProgramCache]: Analyzing trace with hash -875955665, now seen corresponding path program 1 times [2020-09-24 19:29:41,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:41,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481512746] [2020-09-24 19:29:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-09-24 19:29:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:29:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-09-24 19:29:42,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:42,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:29:42,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:42,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:42,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:29:42,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:29:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:29:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:29:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:29:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-24 19:29:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:43,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:43,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:43,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-24 19:29:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-09-24 19:29:43,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481512746] [2020-09-24 19:29:43,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:43,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:43,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295322305] [2020-09-24 19:29:43,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:43,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:43,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:43,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:43,517 INFO L87 Difference]: Start difference. First operand 2282 states and 2658 transitions. Second operand 7 states. [2020-09-24 19:29:45,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:45,683 INFO L93 Difference]: Finished difference Result 4953 states and 5811 transitions. [2020-09-24 19:29:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:29:45,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-09-24 19:29:45,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:45,695 INFO L225 Difference]: With dead ends: 4953 [2020-09-24 19:29:45,695 INFO L226 Difference]: Without dead ends: 2044 [2020-09-24 19:29:45,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-24 19:29:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1948. [2020-09-24 19:29:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-24 19:29:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2127 transitions. [2020-09-24 19:29:45,770 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2127 transitions. Word has length 372 [2020-09-24 19:29:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:45,771 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2127 transitions. [2020-09-24 19:29:45,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2127 transitions. [2020-09-24 19:29:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-24 19:29:45,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:45,785 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:29:45,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:45,786 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:45,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:45,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1483264071, now seen corresponding path program 1 times [2020-09-24 19:29:45,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:45,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244147981] [2020-09-24 19:29:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-09-24 19:29:46,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:29:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-09-24 19:29:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:29:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-09-24 19:29:46,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:46,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:46,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:46,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:46,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:47,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 19:29:47,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:47,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:29:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:47,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:47,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:29:47,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:47,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 19:29:47,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:47,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 19:29:47,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-09-24 19:29:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:47,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:47,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:47,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:47,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-24 19:29:47,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:47,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:29:47,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-09-24 19:29:47,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244147981] [2020-09-24 19:29:47,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:47,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:47,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939260714] [2020-09-24 19:29:47,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:47,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:47,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:47,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:47,855 INFO L87 Difference]: Start difference. First operand 1948 states and 2127 transitions. Second operand 7 states. [2020-09-24 19:29:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:50,355 INFO L93 Difference]: Finished difference Result 4601 states and 5075 transitions. [2020-09-24 19:29:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:50,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-09-24 19:29:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:50,366 INFO L225 Difference]: With dead ends: 4601 [2020-09-24 19:29:50,366 INFO L226 Difference]: Without dead ends: 2668 [2020-09-24 19:29:50,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2020-09-24 19:29:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2600. [2020-09-24 19:29:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-09-24 19:29:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 2874 transitions. [2020-09-24 19:29:50,438 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 2874 transitions. Word has length 374 [2020-09-24 19:29:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:50,439 INFO L479 AbstractCegarLoop]: Abstraction has 2600 states and 2874 transitions. [2020-09-24 19:29:50,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 2874 transitions. [2020-09-24 19:29:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-09-24 19:29:50,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:50,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:50,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:50,451 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1688607032, now seen corresponding path program 1 times [2020-09-24 19:29:50,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:50,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466732914] [2020-09-24 19:29:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:50,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-09-24 19:29:51,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:51,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-24 19:29:51,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-24 19:29:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 19:29:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:51,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:51,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:51,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:51,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:29:51,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 19:29:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:51,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:29:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:51,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:51,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 19:29:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 19:29:51,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:51,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 19:29:51,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:52,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-24 19:29:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:52,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:52,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 19:29:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 19:29:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:29:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 196 proven. 101 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-24 19:29:52,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466732914] [2020-09-24 19:29:52,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:52,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:52,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269495782] [2020-09-24 19:29:52,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:52,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:52,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:52,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:52,373 INFO L87 Difference]: Start difference. First operand 2600 states and 2874 transitions. Second operand 7 states. [2020-09-24 19:29:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:54,453 INFO L93 Difference]: Finished difference Result 5696 states and 6433 transitions. [2020-09-24 19:29:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:54,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-09-24 19:29:54,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:54,466 INFO L225 Difference]: With dead ends: 5696 [2020-09-24 19:29:54,467 INFO L226 Difference]: Without dead ends: 3111 [2020-09-24 19:29:54,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 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 19:29:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2020-09-24 19:29:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3069. [2020-09-24 19:29:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3069 states. [2020-09-24 19:29:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 3411 transitions. [2020-09-24 19:29:54,548 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 3411 transitions. Word has length 391 [2020-09-24 19:29:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:54,549 INFO L479 AbstractCegarLoop]: Abstraction has 3069 states and 3411 transitions. [2020-09-24 19:29:54,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 3411 transitions. [2020-09-24 19:29:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-24 19:29:54,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:54,559 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:54,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:29:54,560 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:54,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:54,560 INFO L82 PathProgramCache]: Analyzing trace with hash 584845352, now seen corresponding path program 1 times [2020-09-24 19:29:54,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:54,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769705124] [2020-09-24 19:29:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-09-24 19:29:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:29:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:29:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-24 19:29:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 19:29:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:55,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:55,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:29:55,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:55,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:55,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:55,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-24 19:29:55,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:29:55,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:55,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-24 19:29:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:56,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking...