/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:06:49,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:06:49,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:06:49,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:06:49,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:06:49,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:06:49,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:06:49,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:06:49,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:06:49,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:06:49,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:06:49,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:06:49,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:06:49,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:06:49,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:06:49,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:06:49,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:06:49,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:06:49,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:06:49,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:06:49,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:06:49,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:06:49,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:06:49,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:06:49,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:06:49,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:06:49,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:06:49,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:06:49,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:06:49,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:06:49,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:06:49,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:06:49,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:06:49,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:06:49,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:06:49,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:06:49,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:06:49,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:06:49,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:06:49,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:06:49,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:06:49,405 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 [2020-10-14 21:06:49,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:06:49,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:06:49,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:06:49,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:06:49,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:06:49,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:06:49,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:06:49,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:06:49,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:06:49,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:06:49,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:06:49,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:06:49,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:06:49,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:06:49,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:06:49,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:06:49,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:06:49,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:06:49,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:06:49,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:06:49,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:06:49,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:06:49,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:06:49,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:06:49,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:06:49,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:06:49,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:06:49,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:06:49,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:06:49,436 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:06:49,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:06:49,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:06:49,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:06:49,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:06:49,793 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:06:49,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label07.c [2020-10-14 21:06:49,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45f3d2109/e41b84174ae64a7494ae96732e07c8cb/FLAG5cfba5430 [2020-10-14 21:06:50,654 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:06:50,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label07.c [2020-10-14 21:06:50,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45f3d2109/e41b84174ae64a7494ae96732e07c8cb/FLAG5cfba5430 [2020-10-14 21:06:51,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45f3d2109/e41b84174ae64a7494ae96732e07c8cb [2020-10-14 21:06:51,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:06:51,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:06:51,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:51,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:06:51,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:06:51,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:51" (1/1) ... [2020-10-14 21:06:51,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:51, skipping insertion in model container [2020-10-14 21:06:51,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:06:51" (1/1) ... [2020-10-14 21:06:51,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:06:51,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:06:53,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:53,085 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:06:53,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:06:53,905 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:06:53,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53 WrapperNode [2020-10-14 21:06:53,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:06:53,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:06:53,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:06:53,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:06:53,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:53,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:53,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:53,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:54,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:54,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:54,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (1/1) ... [2020-10-14 21:06:54,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:06:54,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:06:54,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:06:54,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:06:54,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (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 [2020-10-14 21:06:54,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:06:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:06:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:06:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:06:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:06:54,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:06:54,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:06:54,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:06:54,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:06:54,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:06:54,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:06:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:06:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:06:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:06:54,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:06:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:06:54,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:06:59,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:06:59,465 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:06:59,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:59 BoogieIcfgContainer [2020-10-14 21:06:59,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:06:59,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:06:59,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:06:59,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:06:59,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:06:51" (1/3) ... [2020-10-14 21:06:59,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589a3596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:59, skipping insertion in model container [2020-10-14 21:06:59,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:06:53" (2/3) ... [2020-10-14 21:06:59,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589a3596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:06:59, skipping insertion in model container [2020-10-14 21:06:59,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:06:59" (3/3) ... [2020-10-14 21:06:59,488 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label07.c [2020-10-14 21:06:59,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:06:59,512 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:06:59,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:06:59,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:06:59,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:06:59,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:06:59,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:06:59,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:06:59,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:06:59,562 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:06:59,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:06:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:06:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 21:06:59,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:06:59,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:06:59,608 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:06:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:06:59,616 INFO L82 PathProgramCache]: Analyzing trace with hash 336576653, now seen corresponding path program 1 times [2020-10-14 21:06:59,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:06:59,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084771726] [2020-10-14 21:06:59,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:06:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:06:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:00,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:00,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 21:07:00,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:00,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-14 21:07:00,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:00,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 21:07:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:07:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:00,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:00,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:00,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:07:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:00,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:00,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084771726] [2020-10-14 21:07:00,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:00,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:07:00,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887790636] [2020-10-14 21:07:00,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:07:00,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:00,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:07:00,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:07:00,333 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:07:09,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:09,505 INFO L93 Difference]: Finished difference Result 2471 states and 4735 transitions. [2020-10-14 21:07:09,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:09,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 21:07:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:09,541 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:07:09,541 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:07:09,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:07:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:07:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1555. [2020-10-14 21:07:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2020-10-14 21:07:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2403 transitions. [2020-10-14 21:07:09,725 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2403 transitions. Word has length 12 [2020-10-14 21:07:09,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:09,725 INFO L479 AbstractCegarLoop]: Abstraction has 1555 states and 2403 transitions. [2020-10-14 21:07:09,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:07:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2403 transitions. [2020-10-14 21:07:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 21:07:09,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:09,732 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:07:09,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:07:09,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1239671147, now seen corresponding path program 1 times [2020-10-14 21:07:09,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:09,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250058753] [2020-10-14 21:07:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:10,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:10,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 21:07:10,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 21:07:10,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:10,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:07:10,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:10,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:10,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:10,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:10,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:07:10,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:10,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:10,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:10,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:10,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:10,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 21:07:10,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:10,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:07:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:10,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250058753] [2020-10-14 21:07:10,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:10,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:10,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750829043] [2020-10-14 21:07:10,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:07:10,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:10,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:07:10,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:10,812 INFO L87 Difference]: Start difference. First operand 1555 states and 2403 transitions. Second operand 6 states. [2020-10-14 21:07:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:21,698 INFO L93 Difference]: Finished difference Result 4689 states and 7282 transitions. [2020-10-14 21:07:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:07:21,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-14 21:07:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:21,719 INFO L225 Difference]: With dead ends: 4689 [2020-10-14 21:07:21,719 INFO L226 Difference]: Without dead ends: 3140 [2020-10-14 21:07:21,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:07:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2020-10-14 21:07:21,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3127. [2020-10-14 21:07:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2020-10-14 21:07:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4276 transitions. [2020-10-14 21:07:21,844 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4276 transitions. Word has length 87 [2020-10-14 21:07:21,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:21,845 INFO L479 AbstractCegarLoop]: Abstraction has 3127 states and 4276 transitions. [2020-10-14 21:07:21,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:07:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4276 transitions. [2020-10-14 21:07:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 21:07:21,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:21,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:07:21,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:07:21,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash -141866711, now seen corresponding path program 1 times [2020-10-14 21:07:21,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:21,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917624869] [2020-10-14 21:07:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:22,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:07:22,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 21:07:22,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:22,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:07:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:22,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:22,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:07:22,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:22,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:22,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:22,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:23,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:23,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:07:23,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:23,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:07:23,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:23,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:23,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:07:23,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:23,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917624869] [2020-10-14 21:07:23,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:23,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:23,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122394681] [2020-10-14 21:07:23,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:23,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:23,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:23,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:23,234 INFO L87 Difference]: Start difference. First operand 3127 states and 4276 transitions. Second operand 7 states. [2020-10-14 21:07:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:36,338 INFO L93 Difference]: Finished difference Result 9536 states and 13149 transitions. [2020-10-14 21:07:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:07:36,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-14 21:07:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:36,379 INFO L225 Difference]: With dead ends: 9536 [2020-10-14 21:07:36,379 INFO L226 Difference]: Without dead ends: 6415 [2020-10-14 21:07:36,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:07:36,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6415 states. [2020-10-14 21:07:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6415 to 6356. [2020-10-14 21:07:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6356 states. [2020-10-14 21:07:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 8111 transitions. [2020-10-14 21:07:36,660 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 8111 transitions. Word has length 93 [2020-10-14 21:07:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:36,662 INFO L479 AbstractCegarLoop]: Abstraction has 6356 states and 8111 transitions. [2020-10-14 21:07:36,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 8111 transitions. [2020-10-14 21:07:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 21:07:36,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:36,682 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:07:36,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:07:36,682 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:36,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:36,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1655967080, now seen corresponding path program 1 times [2020-10-14 21:07:36,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:36,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36321328] [2020-10-14 21:07:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:38,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:38,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 21:07:38,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-14 21:07:38,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:38,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:38,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:07:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:38,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:38,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:38,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:38,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:07:38,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:38,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:38,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:38,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:07:38,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:38,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 21:07:38,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:38,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:38,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:07:38,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:07:39,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36321328] [2020-10-14 21:07:39,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:39,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:07:39,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907846256] [2020-10-14 21:07:39,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:39,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:39,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:39,305 INFO L87 Difference]: Start difference. First operand 6356 states and 8111 transitions. Second operand 7 states. [2020-10-14 21:07:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:51,872 INFO L93 Difference]: Finished difference Result 9863 states and 12987 transitions. [2020-10-14 21:07:51,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:07:51,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-14 21:07:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:51,908 INFO L225 Difference]: With dead ends: 9863 [2020-10-14 21:07:51,909 INFO L226 Difference]: Without dead ends: 6637 [2020-10-14 21:07:51,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:07:51,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6637 states. [2020-10-14 21:07:52,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6637 to 6420. [2020-10-14 21:07:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6420 states. [2020-10-14 21:07:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6420 states to 6420 states and 8181 transitions. [2020-10-14 21:07:52,160 INFO L78 Accepts]: Start accepts. Automaton has 6420 states and 8181 transitions. Word has length 160 [2020-10-14 21:07:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:52,162 INFO L479 AbstractCegarLoop]: Abstraction has 6420 states and 8181 transitions. [2020-10-14 21:07:52,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:07:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6420 states and 8181 transitions. [2020-10-14 21:07:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 21:07:52,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:52,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:07:52,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:07:52,171 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:52,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:52,172 INFO L82 PathProgramCache]: Analyzing trace with hash 329470160, now seen corresponding path program 1 times [2020-10-14 21:07:52,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:52,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352022648] [2020-10-14 21:07:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 21:07:53,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-14 21:07:53,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:07:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:07:53,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:53,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:53,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:53,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:07:53,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:07:53,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:07:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:53,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 21:07:53,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:07:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:07:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:07:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:53,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:53,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:53,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:07:53,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-14 21:07:53,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:53,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:53,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:07:53,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:07:53,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352022648] [2020-10-14 21:07:53,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:53,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:07:53,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110627331] [2020-10-14 21:07:53,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:07:53,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:53,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:07:53,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:07:53,735 INFO L87 Difference]: Start difference. First operand 6420 states and 8181 transitions. Second operand 7 states. [2020-10-14 21:08:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:09,129 INFO L93 Difference]: Finished difference Result 12381 states and 16788 transitions. [2020-10-14 21:08:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:08:09,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-14 21:08:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:09,157 INFO L225 Difference]: With dead ends: 12381 [2020-10-14 21:08:09,157 INFO L226 Difference]: Without dead ends: 5965 [2020-10-14 21:08:09,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:08:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2020-10-14 21:08:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 5613. [2020-10-14 21:08:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5613 states. [2020-10-14 21:08:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5613 states to 5613 states and 7011 transitions. [2020-10-14 21:08:09,319 INFO L78 Accepts]: Start accepts. Automaton has 5613 states and 7011 transitions. Word has length 187 [2020-10-14 21:08:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:09,320 INFO L479 AbstractCegarLoop]: Abstraction has 5613 states and 7011 transitions. [2020-10-14 21:08:09,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:09,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5613 states and 7011 transitions. [2020-10-14 21:08:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 21:08:09,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:09,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:08:09,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:08:09,325 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:09,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1674801401, now seen corresponding path program 1 times [2020-10-14 21:08:09,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:09,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378893488] [2020-10-14 21:08:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:11,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:11,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 21:08:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2186 [2020-10-14 21:08:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:11,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:08:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:11,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:11,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:08:11,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:11,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:11,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:11,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:11,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:11,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:11,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 21:08:11,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:11,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:11,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:12,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:08:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:12,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:08:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:08:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:08:12,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378893488] [2020-10-14 21:08:12,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:12,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:08:12,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670715008] [2020-10-14 21:08:12,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:12,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:12,238 INFO L87 Difference]: Start difference. First operand 5613 states and 7011 transitions. Second operand 7 states. [2020-10-14 21:08:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:33,616 INFO L93 Difference]: Finished difference Result 15563 states and 20199 transitions. [2020-10-14 21:08:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:08:33,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 21:08:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:33,663 INFO L225 Difference]: With dead ends: 15563 [2020-10-14 21:08:33,664 INFO L226 Difference]: Without dead ends: 10723 [2020-10-14 21:08:33,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10723 states. [2020-10-14 21:08:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10723 to 9738. [2020-10-14 21:08:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9738 states. [2020-10-14 21:08:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 12571 transitions. [2020-10-14 21:08:33,916 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 12571 transitions. Word has length 232 [2020-10-14 21:08:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:33,918 INFO L479 AbstractCegarLoop]: Abstraction has 9738 states and 12571 transitions. [2020-10-14 21:08:33,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 12571 transitions. [2020-10-14 21:08:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 21:08:33,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:33,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:33,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:08:33,922 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash -159096727, now seen corresponding path program 1 times [2020-10-14 21:08:33,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:33,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490377929] [2020-10-14 21:08:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:34,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:37,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 21:08:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:08:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3179 [2020-10-14 21:08:37,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:37,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:08:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 21:08:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:37,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:37,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:37,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:37,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:08:37,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:37,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:37,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:37,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 21:08:37,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:37,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:37,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:38,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:08:38,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 21:08:38,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:38,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:38,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:38,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:08:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:08:38,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490377929] [2020-10-14 21:08:38,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:38,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:08:38,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203540071] [2020-10-14 21:08:38,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:08:38,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:38,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:08:38,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:08:38,281 INFO L87 Difference]: Start difference. First operand 9738 states and 12571 transitions. Second operand 5 states. [2020-10-14 21:08:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:52,645 INFO L93 Difference]: Finished difference Result 26694 states and 36095 transitions. [2020-10-14 21:08:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:08:52,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-14 21:08:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:52,720 INFO L225 Difference]: With dead ends: 26694 [2020-10-14 21:08:52,720 INFO L226 Difference]: Without dead ends: 16936 [2020-10-14 21:08:52,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:08:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16936 states. [2020-10-14 21:08:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16936 to 16123. [2020-10-14 21:08:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16123 states. [2020-10-14 21:08:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16123 states to 16123 states and 20746 transitions. [2020-10-14 21:08:53,182 INFO L78 Accepts]: Start accepts. Automaton has 16123 states and 20746 transitions. Word has length 240 [2020-10-14 21:08:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:53,183 INFO L479 AbstractCegarLoop]: Abstraction has 16123 states and 20746 transitions. [2020-10-14 21:08:53,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:08:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 16123 states and 20746 transitions. [2020-10-14 21:08:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-14 21:08:53,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:53,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:53,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:08:53,189 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash -249016323, now seen corresponding path program 1 times [2020-10-14 21:08:53,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:53,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008753327] [2020-10-14 21:08:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:54,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:54,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-14 21:08:54,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:54,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-10-14 21:08:54,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:54,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:54,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:08:54,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:55,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:08:55,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:55,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:55,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:55,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:08:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:08:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:55,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:55,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:08:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:08:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:08:55,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:08:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:55,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:08:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:08:55,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008753327] [2020-10-14 21:08:55,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:55,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:08:55,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277100318] [2020-10-14 21:08:55,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:08:55,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:55,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:08:55,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:55,807 INFO L87 Difference]: Start difference. First operand 16123 states and 20746 transitions. Second operand 8 states. [2020-10-14 21:09:30,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:30,787 INFO L93 Difference]: Finished difference Result 61317 states and 84627 transitions. [2020-10-14 21:09:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:09:30,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2020-10-14 21:09:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:30,968 INFO L225 Difference]: With dead ends: 61317 [2020-10-14 21:09:30,969 INFO L226 Difference]: Without dead ends: 45967 [2020-10-14 21:09:31,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:09:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45967 states. [2020-10-14 21:09:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45967 to 42844. [2020-10-14 21:09:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42844 states. [2020-10-14 21:09:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42844 states to 42844 states and 58332 transitions. [2020-10-14 21:09:33,164 INFO L78 Accepts]: Start accepts. Automaton has 42844 states and 58332 transitions. Word has length 246 [2020-10-14 21:09:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:33,167 INFO L479 AbstractCegarLoop]: Abstraction has 42844 states and 58332 transitions. [2020-10-14 21:09:33,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:09:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 42844 states and 58332 transitions. [2020-10-14 21:09:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 21:09:33,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:33,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:09:33,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:09:33,174 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:33,174 INFO L82 PathProgramCache]: Analyzing trace with hash -453196475, now seen corresponding path program 1 times [2020-10-14 21:09:33,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:33,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582705291] [2020-10-14 21:09:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:33,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:34,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 21:09:34,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-14 21:09:34,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:34,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:34,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:09:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:09:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:09:34,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:09:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:34,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:35,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:35,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:35,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:35,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:09:35,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:35,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:35,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:35,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:35,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:09:35,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:35,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 21:09:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:35,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:35,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:09:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:09:35,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582705291] [2020-10-14 21:09:35,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:35,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:35,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71707363] [2020-10-14 21:09:35,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:35,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:35,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:35,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:35,503 INFO L87 Difference]: Start difference. First operand 42844 states and 58332 transitions. Second operand 7 states. [2020-10-14 21:09:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:58,699 INFO L93 Difference]: Finished difference Result 107019 states and 151997 transitions. [2020-10-14 21:09:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:09:58,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-14 21:09:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:58,996 INFO L225 Difference]: With dead ends: 107019 [2020-10-14 21:09:58,996 INFO L226 Difference]: Without dead ends: 64172 [2020-10-14 21:09:59,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:09:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64172 states. [2020-10-14 21:10:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64172 to 61546. [2020-10-14 21:10:02,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61546 states. [2020-10-14 21:10:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61546 states to 61546 states and 82787 transitions. [2020-10-14 21:10:02,330 INFO L78 Accepts]: Start accepts. Automaton has 61546 states and 82787 transitions. Word has length 250 [2020-10-14 21:10:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:02,332 INFO L479 AbstractCegarLoop]: Abstraction has 61546 states and 82787 transitions. [2020-10-14 21:10:02,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 61546 states and 82787 transitions. [2020-10-14 21:10:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 21:10:02,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:02,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:10:02,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:10:02,343 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:02,344 INFO L82 PathProgramCache]: Analyzing trace with hash 567297793, now seen corresponding path program 1 times [2020-10-14 21:10:02,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:02,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115254219] [2020-10-14 21:10:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:02,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:02,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 21:10:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-14 21:10:02,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:02,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:10:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 21:10:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:02,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:02,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:10:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:02,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:03,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:03,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:10:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 21:10:03,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:03,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:03,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:03,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:10:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:03,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:10:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 21:10:03,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:03,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:03,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:03,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:10:03,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 21:10:03,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115254219] [2020-10-14 21:10:03,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:03,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:10:03,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090433351] [2020-10-14 21:10:03,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:10:03,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:03,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:10:03,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:10:03,408 INFO L87 Difference]: Start difference. First operand 61546 states and 82787 transitions. Second operand 5 states. [2020-10-14 21:10:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:26,564 INFO L93 Difference]: Finished difference Result 142584 states and 196291 transitions. [2020-10-14 21:10:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:10:26,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 21:10:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:27,231 INFO L225 Difference]: With dead ends: 142584 [2020-10-14 21:10:27,232 INFO L226 Difference]: Without dead ends: 81010 [2020-10-14 21:10:27,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:10:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81010 states. [2020-10-14 21:10:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81010 to 80995. [2020-10-14 21:10:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80995 states. [2020-10-14 21:10:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80995 states to 80995 states and 108258 transitions. [2020-10-14 21:10:28,596 INFO L78 Accepts]: Start accepts. Automaton has 80995 states and 108258 transitions. Word has length 260 [2020-10-14 21:10:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:28,597 INFO L479 AbstractCegarLoop]: Abstraction has 80995 states and 108258 transitions. [2020-10-14 21:10:28,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:10:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 80995 states and 108258 transitions. [2020-10-14 21:10:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-14 21:10:28,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:28,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:10:28,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:10:28,603 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1050993413, now seen corresponding path program 1 times [2020-10-14 21:10:28,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:28,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60182321] [2020-10-14 21:10:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-14 21:10:29,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 21:10:29,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 21:10:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 21:10:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:10:29,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:29,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:10:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:29,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:30,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:30,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:10:30,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-14 21:10:30,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:30,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:10:30,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 21:10:30,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60182321] [2020-10-14 21:10:30,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:30,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:10:30,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533590280] [2020-10-14 21:10:30,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:10:30,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:30,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:10:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:10:30,344 INFO L87 Difference]: Start difference. First operand 80995 states and 108258 transitions. Second operand 5 states.