/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:49,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:49,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:49,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:49,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:49,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:49,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:49,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:49,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:49,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:49,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:49,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:49,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:49,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:49,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:49,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:49,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:49,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:49,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:49,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:49,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:49,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:49,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:49,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:49,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:49,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:49,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:49,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:49,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:49,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:49,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:49,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:49,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:49,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:49,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:49,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:49,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:49,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:49,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:49,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:49,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:49,168 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 14:40:49,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:49,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:49,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:49,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:49,195 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:49,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:49,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:49,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:49,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:49,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:49,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:49,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:49,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:49,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:49,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:49,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:49,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:49,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:49,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:49,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:49,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:49,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:49,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:49,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:49,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:49,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:49,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:49,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:49,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:49,200 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:40:49,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:49,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:49,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:49,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:49,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:49,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 14:40:49,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7939c61/38d64d64ce894378b70a9bbd6cfe58c5/FLAGf6011b553 [2020-09-25 14:40:50,347 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:50,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 14:40:50,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7939c61/38d64d64ce894378b70a9bbd6cfe58c5/FLAGf6011b553 [2020-09-25 14:40:50,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7939c61/38d64d64ce894378b70a9bbd6cfe58c5 [2020-09-25 14:40:50,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:50,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:50,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:50,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:50,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:50,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:50" (1/1) ... [2020-09-25 14:40:50,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:50, skipping insertion in model container [2020-09-25 14:40:50,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:50" (1/1) ... [2020-09-25 14:40:50,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:50,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:51,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:51,229 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:51,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:51,448 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:51,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51 WrapperNode [2020-09-25 14:40:51,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:51,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:51,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:51,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:51,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (1/1) ... [2020-09-25 14:40:51,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:51,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:51,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:51,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:51,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (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 14:40:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:51,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:52,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:52,894 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:52,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:52 BoogieIcfgContainer [2020-09-25 14:40:52,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:52,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:52,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:52,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:52,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:50" (1/3) ... [2020-09-25 14:40:52,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:52, skipping insertion in model container [2020-09-25 14:40:52,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:51" (2/3) ... [2020-09-25 14:40:52,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:52, skipping insertion in model container [2020-09-25 14:40:52,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:52" (3/3) ... [2020-09-25 14:40:52,912 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 14:40:52,923 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:52,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:52,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:52,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:52,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:52,995 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:52,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:52,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:52,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:52,995 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:52,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:53,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 14:40:53,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:53,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:53,053 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:53,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 14:40:53,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:53,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 14:40:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:58,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:40:58,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 14:40:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:58,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 14:40:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:58,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:58,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:58,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:58,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:40:58,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:58,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:58,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-09-25 14:40:58,778 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 14:40:58,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 14:40:58,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:58,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:58,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856665350] [2020-09-25 14:40:58,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:58,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:58,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:58,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:58,812 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:41:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:01,082 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 14:41:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:01,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 14:41:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:01,112 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 14:41:01,112 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 14:41:01,120 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 14:41:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 14:41:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 14:41:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 14:41:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 14:41:01,279 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 14:41:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:01,281 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 14:41:01,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 14:41:01,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 14:41:01,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:01,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:01,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:01,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:01,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:01,299 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 14:41:01,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:01,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237760700] [2020-09-25 14:41:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:05,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 14:41:06,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:41:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:41:06,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:06,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:06,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:41:06,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:41:06,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:06,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:06,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:06,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:06,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:06,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:06,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:06,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:06,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:06,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:06,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:06,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:41:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:06,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237760700] [2020-09-25 14:41:06,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:06,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:06,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111816203] [2020-09-25 14:41:06,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:06,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:06,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:06,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:06,642 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 14:41:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:08,426 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 14:41:08,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:08,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 14:41:08,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:08,437 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 14:41:08,437 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 14:41:08,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 14:41:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 14:41:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 14:41:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 14:41:08,479 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-25 14:41:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:08,480 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 14:41:08,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 14:41:08,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 14:41:08,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:08,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:08,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:08,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:08,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:08,487 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 14:41:08,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:08,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998897761] [2020-09-25 14:41:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 14:41:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:13,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:41:13,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 14:41:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:41:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:13,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:13,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:41:13,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:13,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:13,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:13,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:41:13,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:41:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:13,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998897761] [2020-09-25 14:41:13,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:13,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:13,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89927634] [2020-09-25 14:41:13,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:13,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:13,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:13,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:13,774 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 14:41:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:16,086 INFO L93 Difference]: Finished difference Result 2868 states and 3671 transitions. [2020-09-25 14:41:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:16,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 14:41:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:16,103 INFO L225 Difference]: With dead ends: 2868 [2020-09-25 14:41:16,103 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 14:41:16,106 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 [2020-09-25 14:41:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 14:41:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1705. [2020-09-25 14:41:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1705 states. [2020-09-25 14:41:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2166 transitions. [2020-09-25 14:41:16,157 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2166 transitions. Word has length 198 [2020-09-25 14:41:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:16,158 INFO L479 AbstractCegarLoop]: Abstraction has 1705 states and 2166 transitions. [2020-09-25 14:41:16,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2166 transitions. [2020-09-25 14:41:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 14:41:16,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:16,167 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:16,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:16,168 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:16,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:16,168 INFO L82 PathProgramCache]: Analyzing trace with hash 855673452, now seen corresponding path program 1 times [2020-09-25 14:41:16,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:16,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332837120] [2020-09-25 14:41:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:16,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:16,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 14:41:21,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:41:21,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:41:21,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 14:41:21,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 14:41:21,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:21,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:21,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:21,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:21,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:21,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:41:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:21,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:21,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:41:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:41:21,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332837120] [2020-09-25 14:41:21,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:21,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:21,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822672747] [2020-09-25 14:41:21,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:21,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:21,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:21,534 INFO L87 Difference]: Start difference. First operand 1705 states and 2166 transitions. Second operand 5 states. [2020-09-25 14:41:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:23,032 INFO L93 Difference]: Finished difference Result 4113 states and 5359 transitions. [2020-09-25 14:41:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:23,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-09-25 14:41:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:23,052 INFO L225 Difference]: With dead ends: 4113 [2020-09-25 14:41:23,052 INFO L226 Difference]: Without dead ends: 2430 [2020-09-25 14:41:23,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-09-25 14:41:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2308. [2020-09-25 14:41:23,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2020-09-25 14:41:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 2991 transitions. [2020-09-25 14:41:23,177 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 2991 transitions. Word has length 220 [2020-09-25 14:41:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:23,178 INFO L479 AbstractCegarLoop]: Abstraction has 2308 states and 2991 transitions. [2020-09-25 14:41:23,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:23,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 2991 transitions. [2020-09-25 14:41:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 14:41:23,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:23,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:23,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:23,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:23,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:23,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 14:41:23,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:23,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396139834] [2020-09-25 14:41:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 14:41:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4325 [2020-09-25 14:41:27,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:27,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:41:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:41:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:27,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:27,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:41:27,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:27,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:27,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:27,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:27,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:27,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:27,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:27,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:27,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:41:27,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 14:41:27,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 14:41:27,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 14:41:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:27,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396139834] [2020-09-25 14:41:27,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:27,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:27,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572296815] [2020-09-25 14:41:27,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:27,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:27,865 INFO L87 Difference]: Start difference. First operand 2308 states and 2991 transitions. Second operand 7 states. [2020-09-25 14:41:29,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:29,213 INFO L93 Difference]: Finished difference Result 4584 states and 6109 transitions. [2020-09-25 14:41:29,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:41:29,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 14:41:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:29,226 INFO L225 Difference]: With dead ends: 4584 [2020-09-25 14:41:29,227 INFO L226 Difference]: Without dead ends: 2298 [2020-09-25 14:41:29,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:41:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2020-09-25 14:41:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2222. [2020-09-25 14:41:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2222 states. [2020-09-25 14:41:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 2790 transitions. [2020-09-25 14:41:29,305 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 2790 transitions. Word has length 226 [2020-09-25 14:41:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:29,305 INFO L479 AbstractCegarLoop]: Abstraction has 2222 states and 2790 transitions. [2020-09-25 14:41:29,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 2790 transitions. [2020-09-25 14:41:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 14:41:29,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:29,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:29,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:29,317 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:29,317 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-25 14:41:29,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:29,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283085482] [2020-09-25 14:41:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:29,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:34,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 14:41:34,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:34,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:41:34,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:34,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:41:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:41:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:34,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:34,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:41:34,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:34,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:34,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:34,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:34,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:34,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:41:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:41:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:34,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:41:34,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:41:34,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:34,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:34,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:41:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:34,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283085482] [2020-09-25 14:41:34,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:34,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:34,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030498083] [2020-09-25 14:41:34,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:34,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:34,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:34,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:34,639 INFO L87 Difference]: Start difference. First operand 2222 states and 2790 transitions. Second operand 7 states. [2020-09-25 14:41:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:36,884 INFO L93 Difference]: Finished difference Result 5881 states and 7719 transitions. [2020-09-25 14:41:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:41:36,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-25 14:41:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:36,907 INFO L225 Difference]: With dead ends: 5881 [2020-09-25 14:41:36,907 INFO L226 Difference]: Without dead ends: 3681 [2020-09-25 14:41:36,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:41:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2020-09-25 14:41:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3602. [2020-09-25 14:41:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3602 states. [2020-09-25 14:41:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 4636 transitions. [2020-09-25 14:41:37,058 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 4636 transitions. Word has length 227 [2020-09-25 14:41:37,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:37,059 INFO L479 AbstractCegarLoop]: Abstraction has 3602 states and 4636 transitions. [2020-09-25 14:41:37,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 4636 transitions. [2020-09-25 14:41:37,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 14:41:37,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:37,075 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:37,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:41:37,076 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:37,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:37,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1135663129, now seen corresponding path program 1 times [2020-09-25 14:41:37,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:37,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287158365] [2020-09-25 14:41:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking...