/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 --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/Problem01_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:28:34,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:28:34,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:28:34,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:28:34,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:28:34,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:28:34,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:28:34,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:28:34,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:28:34,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:28:34,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:28:34,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:28:34,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:28:34,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:28:34,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:28:34,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:28:34,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:28:34,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:28:34,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:28:34,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:28:34,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:28:34,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:28:34,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:28:34,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:28:34,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:28:34,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:28:34,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:28:34,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:28:34,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:28:34,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:28:34,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:28:34,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:28:34,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:28:34,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:28:34,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:28:34,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:28:34,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:28:34,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:28:34,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:28:34,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:28:34,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:28:34,642 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 [2020-09-21 12:28:34,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:28:34,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:28:34,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:28:34,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:28:34,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:28:34,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:28:34,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:28:34,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:28:34,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:28:34,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:28:34,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:28:34,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:28:34,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:28:34,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:28:34,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:28:34,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:28:34,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:28:34,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:28:34,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:28:34,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:28:34,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:28:34,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:28:34,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:28:34,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:28:34,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:28:34,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:28:34,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:28:34,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:28:34,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:28:34,676 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.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; [2020-09-21 12:28:35,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:28:35,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:28:35,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:28:35,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:28:35,147 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:28:35,148 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-21 12:28:35,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e76f4ad0/79a8209e36674e20802fd3381a26058f/FLAGa70c13a9b [2020-09-21 12:28:35,809 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:28:35,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-21 12:28:35,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e76f4ad0/79a8209e36674e20802fd3381a26058f/FLAGa70c13a9b [2020-09-21 12:28:36,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e76f4ad0/79a8209e36674e20802fd3381a26058f [2020-09-21 12:28:36,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:28:36,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:28:36,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:28:36,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:28:36,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:28:36,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:36,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36, skipping insertion in model container [2020-09-21 12:28:36,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:36,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:28:36,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:28:36,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:28:36,749 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:28:36,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:28:36,966 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:28:36,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36 WrapperNode [2020-09-21 12:28:36,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:28:36,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:28:36,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:28:36,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:28:36,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:36,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:37,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:37,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:37,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:37,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:37,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (1/1) ... [2020-09-21 12:28:37,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:28:37,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:28:37,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:28:37,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:28:37,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (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 [2020-09-21 12:28:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:28:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:28:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:28:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:28:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:28:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:28:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:28:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:28:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:28:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:28:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:28:38,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:28:38,360 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:28:38,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:38 BoogieIcfgContainer [2020-09-21 12:28:38,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:28:38,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:28:38,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:28:38,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:28:38,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:28:36" (1/3) ... [2020-09-21 12:28:38,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4445c8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:28:38, skipping insertion in model container [2020-09-21 12:28:38,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:28:36" (2/3) ... [2020-09-21 12:28:38,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4445c8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:28:38, skipping insertion in model container [2020-09-21 12:28:38,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:28:38" (3/3) ... [2020-09-21 12:28:38,377 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-21 12:28:38,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:28:38,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:28:38,424 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:28:38,462 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:28:38,462 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:28:38,462 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:28:38,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:28:38,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:28:38,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:28:38,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:28:38,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:28:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-09-21 12:28:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-21 12:28:38,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:38,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:38,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash 597031182, now seen corresponding path program 1 times [2020-09-21 12:28:38,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:38,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954212464] [2020-09-21 12:28:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:39,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:39,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-21 12:28:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:28:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:28:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:28:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-21 12:28:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:28:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:40,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:40,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:40,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:40,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:28:40,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:28:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:40,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954212464] [2020-09-21 12:28:40,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:28:40,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:28:40,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074348351] [2020-09-21 12:28:40,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:28:40,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:40,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:28:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:28:40,157 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-09-21 12:28:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:41,717 INFO L93 Difference]: Finished difference Result 557 states and 956 transitions. [2020-09-21 12:28:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:41,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-21 12:28:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:41,751 INFO L225 Difference]: With dead ends: 557 [2020-09-21 12:28:41,752 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 12:28:41,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:41,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 12:28:41,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2020-09-21 12:28:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-21 12:28:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 384 transitions. [2020-09-21 12:28:41,842 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 384 transitions. Word has length 120 [2020-09-21 12:28:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:41,844 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 384 transitions. [2020-09-21 12:28:41,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:28:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 384 transitions. [2020-09-21 12:28:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-21 12:28:41,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:41,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:41,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:28:41,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:41,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:41,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1577353429, now seen corresponding path program 1 times [2020-09-21 12:28:41,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:41,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872774631] [2020-09-21 12:28:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:42,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:42,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-21 12:28:42,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:42,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-21 12:28:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:28:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:28:42,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:28:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:43,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:43,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:43,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:43,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:28:43,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:28:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:43,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:43,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:28:43,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:43,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:28:43,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:43,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:43,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:28:43,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:43,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872774631] [2020-09-21 12:28:43,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:28:43,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:28:43,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576785565] [2020-09-21 12:28:43,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:43,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:43,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:43,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:43,155 INFO L87 Difference]: Start difference. First operand 280 states and 384 transitions. Second operand 7 states. [2020-09-21 12:28:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:44,750 INFO L93 Difference]: Finished difference Result 858 states and 1204 transitions. [2020-09-21 12:28:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:28:44,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-21 12:28:44,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:44,758 INFO L225 Difference]: With dead ends: 858 [2020-09-21 12:28:44,758 INFO L226 Difference]: Without dead ends: 584 [2020-09-21 12:28:44,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:28:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-09-21 12:28:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 562. [2020-09-21 12:28:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-21 12:28:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 747 transitions. [2020-09-21 12:28:44,826 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 747 transitions. Word has length 129 [2020-09-21 12:28:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:44,827 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 747 transitions. [2020-09-21 12:28:44,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 747 transitions. [2020-09-21 12:28:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-21 12:28:44,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:44,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:44,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:28:44,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:44,833 INFO L82 PathProgramCache]: Analyzing trace with hash -46995225, now seen corresponding path program 1 times [2020-09-21 12:28:44,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:44,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180951903] [2020-09-21 12:28:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:44,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-21 12:28:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-21 12:28:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:28:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-21 12:28:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:46,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:46,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:46,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:46,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:46,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:46,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:46,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:46,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:28:46,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:46,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:28:46,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:46,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:28:46,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:46,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180951903] [2020-09-21 12:28:46,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:46,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:28:46,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10793454] [2020-09-21 12:28:46,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:28:46,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:28:46,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:46,134 INFO L87 Difference]: Start difference. First operand 562 states and 747 transitions. Second operand 5 states. [2020-09-21 12:28:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:47,450 INFO L93 Difference]: Finished difference Result 1541 states and 2103 transitions. [2020-09-21 12:28:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:47,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-21 12:28:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:47,462 INFO L225 Difference]: With dead ends: 1541 [2020-09-21 12:28:47,462 INFO L226 Difference]: Without dead ends: 985 [2020-09-21 12:28:47,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2020-09-21 12:28:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 979. [2020-09-21 12:28:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-09-21 12:28:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1231 transitions. [2020-09-21 12:28:47,509 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1231 transitions. Word has length 131 [2020-09-21 12:28:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:47,510 INFO L479 AbstractCegarLoop]: Abstraction has 979 states and 1231 transitions. [2020-09-21 12:28:47,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:28:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1231 transitions. [2020-09-21 12:28:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-21 12:28:47,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:47,528 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:47,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:28:47,528 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2059162482, now seen corresponding path program 1 times [2020-09-21 12:28:47,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:47,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852589741] [2020-09-21 12:28:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:48,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:48,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-21 12:28:48,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1135 [2020-09-21 12:28:48,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:28:48,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:28:48,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:48,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:48,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:48,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:48,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:48,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:48,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:48,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:28:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:28:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:28:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:28:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:48,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:48,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:28:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:28:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:28:48,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:28:48,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852589741] [2020-09-21 12:28:48,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:48,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:48,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621391956] [2020-09-21 12:28:48,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:48,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:48,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:48,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:48,960 INFO L87 Difference]: Start difference. First operand 979 states and 1231 transitions. Second operand 7 states. [2020-09-21 12:28:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:50,342 INFO L93 Difference]: Finished difference Result 2129 states and 2729 transitions. [2020-09-21 12:28:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:28:50,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-21 12:28:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:50,349 INFO L225 Difference]: With dead ends: 2129 [2020-09-21 12:28:50,349 INFO L226 Difference]: Without dead ends: 1156 [2020-09-21 12:28:50,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:28:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2020-09-21 12:28:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1124. [2020-09-21 12:28:50,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2020-09-21 12:28:50,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1343 transitions. [2020-09-21 12:28:50,397 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1343 transitions. Word has length 140 [2020-09-21 12:28:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:50,398 INFO L479 AbstractCegarLoop]: Abstraction has 1124 states and 1343 transitions. [2020-09-21 12:28:50,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1343 transitions. [2020-09-21 12:28:50,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-21 12:28:50,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:50,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:50,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:28:50,407 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash 360697815, now seen corresponding path program 1 times [2020-09-21 12:28:50,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:50,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142344707] [2020-09-21 12:28:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:51,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:51,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-21 12:28:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:28:51,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:28:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-21 12:28:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:51,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:51,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:51,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:51,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:28:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:28:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:28:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:51,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142344707] [2020-09-21 12:28:51,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:51,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:28:51,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251926660] [2020-09-21 12:28:51,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:28:51,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:28:51,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:51,706 INFO L87 Difference]: Start difference. First operand 1124 states and 1343 transitions. Second operand 5 states. [2020-09-21 12:28:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:52,995 INFO L93 Difference]: Finished difference Result 2798 states and 3416 transitions. [2020-09-21 12:28:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:52,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-21 12:28:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:53,013 INFO L225 Difference]: With dead ends: 2798 [2020-09-21 12:28:53,013 INFO L226 Difference]: Without dead ends: 1680 [2020-09-21 12:28:53,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:53,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-09-21 12:28:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1541. [2020-09-21 12:28:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-09-21 12:28:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1855 transitions. [2020-09-21 12:28:53,074 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1855 transitions. Word has length 139 [2020-09-21 12:28:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:53,077 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1855 transitions. [2020-09-21 12:28:53,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:28:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1855 transitions. [2020-09-21 12:28:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-21 12:28:53,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:53,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:53,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:28:53,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:53,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2034569339, now seen corresponding path program 1 times [2020-09-21 12:28:53,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:53,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681643792] [2020-09-21 12:28:53,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:53,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:54,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:54,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-21 12:28:54,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:28:54,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:28:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:28:54,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 12:28:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:54,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:54,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:54,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:54,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:28:54,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:54,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:28:54,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:54,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:54,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:28:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:28:54,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:54,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 12:28:54,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:28:54,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681643792] [2020-09-21 12:28:54,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:28:54,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:28:54,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566304120] [2020-09-21 12:28:54,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:54,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:54,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:54,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:54,402 INFO L87 Difference]: Start difference. First operand 1541 states and 1855 transitions. Second operand 7 states. [2020-09-21 12:28:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:55,903 INFO L93 Difference]: Finished difference Result 4387 states and 5467 transitions. [2020-09-21 12:28:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:28:55,904 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-21 12:28:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:55,922 INFO L225 Difference]: With dead ends: 4387 [2020-09-21 12:28:55,922 INFO L226 Difference]: Without dead ends: 2852 [2020-09-21 12:28:55,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-09-21 12:28:56,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2820. [2020-09-21 12:28:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2820 states. [2020-09-21 12:28:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3423 transitions. [2020-09-21 12:28:56,068 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3423 transitions. Word has length 146 [2020-09-21 12:28:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:56,068 INFO L479 AbstractCegarLoop]: Abstraction has 2820 states and 3423 transitions. [2020-09-21 12:28:56,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3423 transitions. [2020-09-21 12:28:56,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-21 12:28:56,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:56,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:28:56,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:28:56,077 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:56,077 INFO L82 PathProgramCache]: Analyzing trace with hash 743670626, now seen corresponding path program 1 times [2020-09-21 12:28:56,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:56,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823434180] [2020-09-21 12:28:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:57,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:57,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:28:57,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:28:57,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:28:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:28:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:57,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:57,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:28:57,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:57,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:57,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:57,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:28:57,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:28:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:28:57,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:28:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:57,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:28:57,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:28:57,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:28:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:28:57,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823434180] [2020-09-21 12:28:57,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:57,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:57,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937300701] [2020-09-21 12:28:57,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:57,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:57,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:57,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:57,399 INFO L87 Difference]: Start difference. First operand 2820 states and 3423 transitions. Second operand 7 states. [2020-09-21 12:28:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:58,812 INFO L93 Difference]: Finished difference Result 5650 states and 6894 transitions. [2020-09-21 12:28:58,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:28:58,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-21 12:28:58,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:58,829 INFO L225 Difference]: With dead ends: 5650 [2020-09-21 12:28:58,830 INFO L226 Difference]: Without dead ends: 2546 [2020-09-21 12:28:58,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-09-21 12:28:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1557. [2020-09-21 12:28:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1557 states. [2020-09-21 12:28:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1790 transitions. [2020-09-21 12:28:58,895 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1790 transitions. Word has length 148 [2020-09-21 12:28:58,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:58,896 INFO L479 AbstractCegarLoop]: Abstraction has 1557 states and 1790 transitions. [2020-09-21 12:28:58,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:58,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1790 transitions. [2020-09-21 12:28:58,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-21 12:28:58,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:58,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:58,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:28:58,901 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:58,901 INFO L82 PathProgramCache]: Analyzing trace with hash 992130043, now seen corresponding path program 1 times [2020-09-21 12:28:58,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:58,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400052013] [2020-09-21 12:28:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:28:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:28:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:28:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:00,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:00,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:29:00,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:00,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:00,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:29:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:00,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:00,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:00,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:00,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:29:00,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:29:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:29:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:00,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400052013] [2020-09-21 12:29:00,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:29:00,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:29:00,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33080502] [2020-09-21 12:29:00,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:29:00,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:00,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:29:00,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:29:00,551 INFO L87 Difference]: Start difference. First operand 1557 states and 1790 transitions. Second operand 8 states. [2020-09-21 12:29:02,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:02,172 INFO L93 Difference]: Finished difference Result 3128 states and 3619 transitions. [2020-09-21 12:29:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:02,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-21 12:29:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:02,181 INFO L225 Difference]: With dead ends: 3128 [2020-09-21 12:29:02,181 INFO L226 Difference]: Without dead ends: 1577 [2020-09-21 12:29:02,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:29:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2020-09-21 12:29:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1567. [2020-09-21 12:29:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-09-21 12:29:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1798 transitions. [2020-09-21 12:29:02,230 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1798 transitions. Word has length 153 [2020-09-21 12:29:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:02,230 INFO L479 AbstractCegarLoop]: Abstraction has 1567 states and 1798 transitions. [2020-09-21 12:29:02,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:29:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1798 transitions. [2020-09-21 12:29:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-21 12:29:02,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:02,236 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:02,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:29:02,236 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:02,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash 969873886, now seen corresponding path program 1 times [2020-09-21 12:29:02,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:02,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774013069] [2020-09-21 12:29:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:02,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:03,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-21 12:29:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-21 12:29:03,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-21 12:29:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 12:29:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:03,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:03,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:03,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:03,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:03,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:03,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:03,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:03,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:03,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:29:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:29:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:03,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:03,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:29:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:03,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:03,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:29:03,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:03,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:29:03,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:29:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 12:29:03,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774013069] [2020-09-21 12:29:03,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:03,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:03,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751009805] [2020-09-21 12:29:03,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:03,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:03,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:03,730 INFO L87 Difference]: Start difference. First operand 1567 states and 1798 transitions. Second operand 5 states. [2020-09-21 12:29:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:04,644 INFO L93 Difference]: Finished difference Result 3217 states and 3734 transitions. [2020-09-21 12:29:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:04,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-21 12:29:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:04,652 INFO L225 Difference]: With dead ends: 3217 [2020-09-21 12:29:04,653 INFO L226 Difference]: Without dead ends: 1573 [2020-09-21 12:29:04,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2020-09-21 12:29:04,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1565. [2020-09-21 12:29:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-09-21 12:29:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1788 transitions. [2020-09-21 12:29:04,703 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1788 transitions. Word has length 178 [2020-09-21 12:29:04,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:04,704 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1788 transitions. [2020-09-21 12:29:04,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1788 transitions. [2020-09-21 12:29:04,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-21 12:29:04,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:04,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:04,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:29:04,710 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:04,710 INFO L82 PathProgramCache]: Analyzing trace with hash 967083519, now seen corresponding path program 1 times [2020-09-21 12:29:04,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:04,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416715088] [2020-09-21 12:29:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:05,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:05,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-21 12:29:05,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-09-21 12:29:05,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:29:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-21 12:29:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:06,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:06,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:06,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:06,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:06,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:29:06,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:29:06,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-21 12:29:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:29:06,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416715088] [2020-09-21 12:29:06,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:06,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:06,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435992544] [2020-09-21 12:29:06,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:06,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:06,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:06,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:06,277 INFO L87 Difference]: Start difference. First operand 1565 states and 1788 transitions. Second operand 5 states. [2020-09-21 12:29:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:07,254 INFO L93 Difference]: Finished difference Result 1982 states and 2308 transitions. [2020-09-21 12:29:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:07,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-21 12:29:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:07,264 INFO L225 Difference]: With dead ends: 1982 [2020-09-21 12:29:07,264 INFO L226 Difference]: Without dead ends: 1980 [2020-09-21 12:29:07,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:07,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-09-21 12:29:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1837. [2020-09-21 12:29:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1837 states. [2020-09-21 12:29:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2126 transitions. [2020-09-21 12:29:07,314 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2126 transitions. Word has length 183 [2020-09-21 12:29:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:07,315 INFO L479 AbstractCegarLoop]: Abstraction has 1837 states and 2126 transitions. [2020-09-21 12:29:07,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2126 transitions. [2020-09-21 12:29:07,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-21 12:29:07,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:07,322 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-21 12:29:07,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:29:07,323 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:07,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1716812883, now seen corresponding path program 1 times [2020-09-21 12:29:07,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:07,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186472431] [2020-09-21 12:29:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:08,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-21 12:29:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:29:08,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-09-21 12:29:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:29:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:08,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:08,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:08,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:08,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:08,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:29:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:08,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:08,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:29:08,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:29:08,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:08,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:08,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:29:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:08,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:08,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:29:08,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 12:29:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:08,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:08,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:29:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:29:08,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:08,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:29:08,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-21 12:29:09,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186472431] [2020-09-21 12:29:09,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:09,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:09,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654858240] [2020-09-21 12:29:09,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:09,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:09,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:09,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:09,237 INFO L87 Difference]: Start difference. First operand 1837 states and 2126 transitions. Second operand 5 states. [2020-09-21 12:29:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:10,246 INFO L93 Difference]: Finished difference Result 3750 states and 4379 transitions. [2020-09-21 12:29:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:10,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-09-21 12:29:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:10,260 INFO L225 Difference]: With dead ends: 3750 [2020-09-21 12:29:10,260 INFO L226 Difference]: Without dead ends: 1841 [2020-09-21 12:29:10,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-09-21 12:29:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1835. [2020-09-21 12:29:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-09-21 12:29:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2119 transitions. [2020-09-21 12:29:10,333 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2119 transitions. Word has length 219 [2020-09-21 12:29:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:10,334 INFO L479 AbstractCegarLoop]: Abstraction has 1835 states and 2119 transitions. [2020-09-21 12:29:10,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2119 transitions. [2020-09-21 12:29:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-21 12:29:10,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:10,341 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-21 12:29:10,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:29:10,341 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:10,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1363900939, now seen corresponding path program 1 times [2020-09-21 12:29:10,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:10,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903074752] [2020-09-21 12:29:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:11,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:11,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-21 12:29:11,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-21 12:29:11,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:29:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:11,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:11,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:11,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:11,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:29:11,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:11,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:11,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:11,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:11,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:29:11,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 12:29:11,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:11,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:29:11,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:11,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:29:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:11,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:11,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:11,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:29:11,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:11,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:11,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:29:11,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 12:29:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:11,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:11,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:29:11,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:29:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:29:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 107 proven. 14 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-21 12:29:11,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903074752] [2020-09-21 12:29:11,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:11,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:29:11,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153704836] [2020-09-21 12:29:11,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:29:11,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:11,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:29:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:29:11,890 INFO L87 Difference]: Start difference. First operand 1835 states and 2119 transitions. Second operand 7 states. [2020-09-21 12:29:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:14,104 INFO L93 Difference]: Finished difference Result 4151 states and 4959 transitions. [2020-09-21 12:29:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:29:14,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-09-21 12:29:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:14,115 INFO L225 Difference]: With dead ends: 4151 [2020-09-21 12:29:14,116 INFO L226 Difference]: Without dead ends: 2322 [2020-09-21 12:29:14,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:29:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2020-09-21 12:29:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 2254. [2020-09-21 12:29:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2254 states. [2020-09-21 12:29:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2578 transitions. [2020-09-21 12:29:14,177 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2578 transitions. Word has length 220 [2020-09-21 12:29:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:14,178 INFO L479 AbstractCegarLoop]: Abstraction has 2254 states and 2578 transitions. [2020-09-21 12:29:14,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:29:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2578 transitions. [2020-09-21 12:29:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-21 12:29:14,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:14,187 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:29:14,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:29:14,188 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:14,188 INFO L82 PathProgramCache]: Analyzing trace with hash 895884897, now seen corresponding path program 1 times [2020-09-21 12:29:14,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:14,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412163380] [2020-09-21 12:29:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-21 12:29:15,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:29:15,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1047 [2020-09-21 12:29:15,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-21 12:29:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-21 12:29:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:15,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:15,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:15,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:15,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:29:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:29:15,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:29:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:15,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:15,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:29:15,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:29:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:29:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 116 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-21 12:29:15,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412163380] [2020-09-21 12:29:15,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:15,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:29:15,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602252966] [2020-09-21 12:29:15,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:29:15,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:29:15,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:29:15,951 INFO L87 Difference]: Start difference. First operand 2254 states and 2578 transitions. Second operand 5 states. [2020-09-21 12:29:16,625 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-21 12:29:16,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:16,951 INFO L93 Difference]: Finished difference Result 4170 states and 4789 transitions. [2020-09-21 12:29:16,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:29:16,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-09-21 12:29:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:16,960 INFO L225 Difference]: With dead ends: 4170 [2020-09-21 12:29:16,960 INFO L226 Difference]: Without dead ends: 2125 [2020-09-21 12:29:16,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:29:16,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-09-21 12:29:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2113. [2020-09-21 12:29:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-09-21 12:29:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2408 transitions. [2020-09-21 12:29:17,017 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2408 transitions. Word has length 242 [2020-09-21 12:29:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:17,017 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2408 transitions. [2020-09-21 12:29:17,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:29:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2408 transitions. [2020-09-21 12:29:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-21 12:29:17,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:17,026 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-09-21 12:29:17,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:29:17,026 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:17,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1464076110, now seen corresponding path program 1 times [2020-09-21 12:29:17,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:17,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947486156] [2020-09-21 12:29:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-09-21 12:29:18,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:29:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:29:18,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:29:18,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:18,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:29:18,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:18,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:29:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:29:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-21 12:29:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:29:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:29:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:29:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:29:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:29:18,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:29:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-21 12:29:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:18,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:18,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:29:18,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:29:18,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:29:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 160 proven. 26 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-21 12:29:18,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947486156] [2020-09-21 12:29:18,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:18,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:29:18,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380444576] [2020-09-21 12:29:18,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:29:18,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:18,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:29:18,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:29:18,638 INFO L87 Difference]: Start difference. First operand 2113 states and 2408 transitions. Second operand 8 states. [2020-09-21 12:29:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:29:20,655 INFO L93 Difference]: Finished difference Result 3952 states and 4513 transitions. [2020-09-21 12:29:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:29:20,655 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-09-21 12:29:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:29:20,661 INFO L225 Difference]: With dead ends: 3952 [2020-09-21 12:29:20,661 INFO L226 Difference]: Without dead ends: 2125 [2020-09-21 12:29:20,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:29:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-09-21 12:29:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2113. [2020-09-21 12:29:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-09-21 12:29:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2355 transitions. [2020-09-21 12:29:20,709 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2355 transitions. Word has length 272 [2020-09-21 12:29:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:29:20,709 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2355 transitions. [2020-09-21 12:29:20,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:29:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2355 transitions. [2020-09-21 12:29:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-21 12:29:20,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:29:20,719 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-09-21 12:29:20,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:29:20,720 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:29:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:29:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash -904025567, now seen corresponding path program 1 times [2020-09-21 12:29:20,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:29:20,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144029408] [2020-09-21 12:29:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:29:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:20,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:29:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:29:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:21,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:21,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:21,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:21,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:21,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:29:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:22,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:22,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:29:22,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:22,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:29:22,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:22,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:22,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:22,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 12:29:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:22,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:29:22,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:22,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 12:29:22,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:22,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:29:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:29:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:29:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-21 12:29:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:29:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:29:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:29:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-21 12:29:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:29:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:22,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:29:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:29:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-21 12:29:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:29:22,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:29:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:29:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:29:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:29:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-21 12:29:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:29:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:29:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:29:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:29:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:29:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 227 proven. 26 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-09-21 12:29:22,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144029408] [2020-09-21 12:29:22,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:29:22,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:29:22,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280974199] [2020-09-21 12:29:22,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:29:22,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:29:22,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:29:22,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:29:22,363 INFO L87 Difference]: Start difference. First operand 2113 states and 2355 transitions. Second operand 8 states.