/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:54,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:54,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:54,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:54,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:54,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:54,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:54,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:54,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:54,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:54,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:54,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:54,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:54,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:54,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:54,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:54,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:54,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:54,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:54,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:54,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:54,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:54,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:54,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:54,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:54,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:54,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:54,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:54,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:54,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:54,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:54,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:54,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:54,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:54,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:54,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:54,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:54,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:54,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:54,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:54,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:54,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:11:54,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:54,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:54,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:54,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:54,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:54,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:54,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:54,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:54,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:54,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:54,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:54,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:54,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:54,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:54,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:54,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:54,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:54,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:54,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:54,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:54,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:54,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:54,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:54,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:54,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:54,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:54,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:54,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:54,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:54,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:55,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:55,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:55,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:55,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:55,154 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:55,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 10:11:55,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c83d084/b0fc93bf648a429bba66f9f330840b6a/FLAG65d7052c9 [2020-09-25 10:11:55,853 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:55,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 10:11:55,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c83d084/b0fc93bf648a429bba66f9f330840b6a/FLAG65d7052c9 [2020-09-25 10:11:56,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7c83d084/b0fc93bf648a429bba66f9f330840b6a [2020-09-25 10:11:56,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:56,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:56,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:56,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:56,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:56,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:56,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56, skipping insertion in model container [2020-09-25 10:11:56,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:56,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:56,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:56,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:56,842 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:56,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:56,997 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:56,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56 WrapperNode [2020-09-25 10:11:56,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:56,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:56,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:56,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:57,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... [2020-09-25 10:11:57,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:57,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:57,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:57,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:57,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:58,908 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:58,908 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:58,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:58 BoogieIcfgContainer [2020-09-25 10:11:58,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:58,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:58,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:58,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:58,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:56" (1/3) ... [2020-09-25 10:11:58,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:58, skipping insertion in model container [2020-09-25 10:11:58,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:56" (2/3) ... [2020-09-25 10:11:58,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:58, skipping insertion in model container [2020-09-25 10:11:58,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:58" (3/3) ... [2020-09-25 10:11:58,940 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 10:11:58,953 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:58,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:58,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:59,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:59,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:59,020 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:59,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:59,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:59,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:59,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:59,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:59,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 10:11:59,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:59,064 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] [2020-09-25 10:11:59,065 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 10:11:59,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:59,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872194903] [2020-09-25 10:11:59,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 10:12:00,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:12:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-25 10:12:00,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:12:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:00,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:00,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:00,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:12:00,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:00,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:00,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872194903] [2020-09-25 10:12:00,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:00,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:00,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336597534] [2020-09-25 10:12:00,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:00,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:00,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:00,330 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:02,421 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:12:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:02,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 10:12:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:02,449 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:12:02,449 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:12:02,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:12:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:12:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:12:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:12:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:12:02,596 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-25 10:12:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:02,597 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:12:02,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:12:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 10:12:02,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:02,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:02,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:02,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:02,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:02,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 10:12:02,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:02,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419108856] [2020-09-25 10:12:02,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:07,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 10:12:07,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:12:07,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:07,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:07,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 10:12:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:07,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:07,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:07,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:12:07,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:07,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:07,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:07,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:08,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 10:12:08,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:08,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419108856] [2020-09-25 10:12:08,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:08,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:08,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977448195] [2020-09-25 10:12:08,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:08,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:08,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:08,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:08,284 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 10:12:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:10,048 INFO L93 Difference]: Finished difference Result 1393 states and 1707 transitions. [2020-09-25 10:12:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:10,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-09-25 10:12:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:10,059 INFO L225 Difference]: With dead ends: 1393 [2020-09-25 10:12:10,059 INFO L226 Difference]: Without dead ends: 863 [2020-09-25 10:12:10,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:10,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-09-25 10:12:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 851. [2020-09-25 10:12:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 10:12:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1020 transitions. [2020-09-25 10:12:10,120 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1020 transitions. Word has length 132 [2020-09-25 10:12:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:10,124 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1020 transitions. [2020-09-25 10:12:10,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1020 transitions. [2020-09-25 10:12:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 10:12:10,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:10,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:10,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:12:10,129 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:10,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:10,130 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 10:12:10,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:10,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634774929] [2020-09-25 10:12:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:12,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 10:12:12,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:12,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-09-25 10:12:12,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:12,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:12:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 10:12:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:13,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:13,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:12:13,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:13,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:13,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:13,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:13,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 10:12:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:13,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:12:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:13,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634774929] [2020-09-25 10:12:13,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:13,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:12:13,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375107557] [2020-09-25 10:12:13,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:12:13,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:13,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:12:13,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:12:13,499 INFO L87 Difference]: Start difference. First operand 851 states and 1020 transitions. Second operand 12 states. [2020-09-25 10:12:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:16,803 INFO L93 Difference]: Finished difference Result 3137 states and 3976 transitions. [2020-09-25 10:12:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:12:16,804 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-09-25 10:12:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:16,820 INFO L225 Difference]: With dead ends: 3137 [2020-09-25 10:12:16,820 INFO L226 Difference]: Without dead ends: 2258 [2020-09-25 10:12:16,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:12:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-09-25 10:12:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1713. [2020-09-25 10:12:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-09-25 10:12:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2140 transitions. [2020-09-25 10:12:16,908 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2140 transitions. Word has length 142 [2020-09-25 10:12:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:16,909 INFO L479 AbstractCegarLoop]: Abstraction has 1713 states and 2140 transitions. [2020-09-25 10:12:16,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:12:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2140 transitions. [2020-09-25 10:12:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 10:12:16,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:16,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:16,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:16,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash 99423878, now seen corresponding path program 1 times [2020-09-25 10:12:16,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:16,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963821602] [2020-09-25 10:12:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:18,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4430 [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 10:12:21,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:21,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:12:21,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:21,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:21,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 10:12:21,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:21,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:21,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:12:22,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 10:12:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:22,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:22,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 63 proven. 76 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:12:22,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963821602] [2020-09-25 10:12:22,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:22,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:22,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832944127] [2020-09-25 10:12:22,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:22,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:22,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:22,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:22,158 INFO L87 Difference]: Start difference. First operand 1713 states and 2140 transitions. Second operand 9 states. [2020-09-25 10:12:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:25,061 INFO L93 Difference]: Finished difference Result 4195 states and 5312 transitions. [2020-09-25 10:12:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:12:25,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-09-25 10:12:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:25,082 INFO L225 Difference]: With dead ends: 4195 [2020-09-25 10:12:25,083 INFO L226 Difference]: Without dead ends: 2497 [2020-09-25 10:12:25,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:12:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2020-09-25 10:12:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 2303. [2020-09-25 10:12:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-09-25 10:12:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2848 transitions. [2020-09-25 10:12:25,158 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2848 transitions. Word has length 212 [2020-09-25 10:12:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:25,159 INFO L479 AbstractCegarLoop]: Abstraction has 2303 states and 2848 transitions. [2020-09-25 10:12:25,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2848 transitions. [2020-09-25 10:12:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 10:12:25,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:25,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:25,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:25,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash -597957375, now seen corresponding path program 1 times [2020-09-25 10:12:25,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:25,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651729827] [2020-09-25 10:12:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:30,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 10:12:30,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 10:12:30,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:30,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:12:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:30,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-09-25 10:12:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:30,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:30,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:30,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:12:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:30,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:30,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:30,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:30,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:30,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:12:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 10:12:30,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:30,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:12:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:12:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:31,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:31,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:31,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-25 10:12:31,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:31,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:12:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 54 proven. 95 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:12:31,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651729827] [2020-09-25 10:12:31,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:31,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:12:31,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315966909] [2020-09-25 10:12:31,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:12:31,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:31,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:12:31,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:12:31,989 INFO L87 Difference]: Start difference. First operand 2303 states and 2848 transitions. Second operand 17 states. [2020-09-25 10:12:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:42,724 INFO L93 Difference]: Finished difference Result 8192 states and 10866 transitions. [2020-09-25 10:12:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-25 10:12:42,725 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 221 [2020-09-25 10:12:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:42,758 INFO L225 Difference]: With dead ends: 8192 [2020-09-25 10:12:42,758 INFO L226 Difference]: Without dead ends: 6015 [2020-09-25 10:12:42,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 10:12:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2020-09-25 10:12:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 4923. [2020-09-25 10:12:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4923 states. [2020-09-25 10:12:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 6288 transitions. [2020-09-25 10:12:42,932 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 6288 transitions. Word has length 221 [2020-09-25 10:12:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:42,933 INFO L479 AbstractCegarLoop]: Abstraction has 4923 states and 6288 transitions. [2020-09-25 10:12:42,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:12:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 6288 transitions. [2020-09-25 10:12:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 10:12:42,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:42,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:42,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:42,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1015798065, now seen corresponding path program 1 times [2020-09-25 10:12:42,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:42,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417565103] [2020-09-25 10:12:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:43,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking...