/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/Problem19_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:00:02,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:00:02,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:00:02,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:00:02,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:00:02,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:00:02,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:00:02,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:00:02,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:00:02,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:00:02,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:00:02,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:00:02,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:00:02,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:00:02,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:00:02,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:00:02,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:00:02,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:00:02,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:00:02,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:00:02,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:00:02,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:00:02,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:00:02,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:00:02,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:00:02,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:00:02,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:00:02,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:00:02,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:00:02,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:00:02,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:00:02,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:00:02,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:00:02,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:00:02,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:00:02,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:00:02,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:00:02,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:00:02,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:00:02,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:00:02,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:00:02,306 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 23:00:02,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:00:02,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:00:02,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:00:02,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:00:02,364 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:00:02,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:00:02,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:00:02,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:00:02,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:00:02,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:00:02,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:00:02,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:00:02,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:00:02,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:00:02,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:00:02,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:00:02,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:00:02,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:00:02,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:00:02,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:00:02,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:00:02,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:00:02,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:00:02,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:00:02,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:00:02,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:00:02,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:00:02,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:00:02,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:00:02,377 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 23:00:02,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:00:02,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:00:02,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:00:02,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:00:02,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:00:02,736 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2020-10-14 23:00:02,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fb538f77/7050632122fc432ea7413be64fba9186/FLAG3551b2c98 [2020-10-14 23:00:03,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:00:03,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2020-10-14 23:00:03,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fb538f77/7050632122fc432ea7413be64fba9186/FLAG3551b2c98 [2020-10-14 23:00:04,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fb538f77/7050632122fc432ea7413be64fba9186 [2020-10-14 23:00:04,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:00:04,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:00:04,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:00:04,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:00:04,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:00:04,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:00:04" (1/1) ... [2020-10-14 23:00:04,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:04, skipping insertion in model container [2020-10-14 23:00:04,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:00:04" (1/1) ... [2020-10-14 23:00:04,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:00:04,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:00:07,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:00:07,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:00:08,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:00:08,516 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:00:08,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08 WrapperNode [2020-10-14 23:00:08,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:00:08,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:00:08,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:00:08,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:00:08,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:08,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:08,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:08,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:08,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:08,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:09,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (1/1) ... [2020-10-14 23:00:09,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:00:09,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:00:09,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:00:09,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:00:09,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (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 23:00:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:00:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:00:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:00:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:00:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:00:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:00:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:00:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:00:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:00:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:00:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:00:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:00:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:00:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:00:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:00:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:00:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:00:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:00:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:00:09,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:00:09,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:00:23,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:00:23,350 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:00:23,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:00:23 BoogieIcfgContainer [2020-10-14 23:00:23,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:00:23,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:00:23,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:00:23,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:00:23,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:00:04" (1/3) ... [2020-10-14 23:00:23,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6be2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:00:23, skipping insertion in model container [2020-10-14 23:00:23,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:00:08" (2/3) ... [2020-10-14 23:00:23,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6be2e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:00:23, skipping insertion in model container [2020-10-14 23:00:23,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:00:23" (3/3) ... [2020-10-14 23:00:23,384 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label16.c [2020-10-14 23:00:23,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:00:23,411 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:00:23,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:00:23,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:00:23,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:00:23,476 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:00:23,476 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:00:23,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:00:23,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:00:23,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:00:23,477 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:00:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:00:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:00:23,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:00:23,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:00:23,543 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:00:23,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:00:23,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1649387796, now seen corresponding path program 1 times [2020-10-14 23:00:23,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:00:23,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085329828] [2020-10-14 23:00:23,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:00:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:00:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:00:24,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:00:24,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:00:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:00:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-14 23:00:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:00:24,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:00:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:00:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:00:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:00:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:00:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:00:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:00:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:00:24,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:00:24,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:00:24,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:00:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:00:24,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:00:24,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:00:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:00:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:00:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:00:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 23:00:24,790 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 23:00:24,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085329828] [2020-10-14 23:00:24,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:00:24,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:00:24,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868117310] [2020-10-14 23:00:24,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:00:24,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:00:24,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:00:24,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:00:24,835 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 23:01:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:01:08,758 INFO L93 Difference]: Finished difference Result 6572 states and 12481 transitions. [2020-10-14 23:01:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:01:08,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-14 23:01:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:01:08,812 INFO L225 Difference]: With dead ends: 6572 [2020-10-14 23:01:08,813 INFO L226 Difference]: Without dead ends: 4727 [2020-10-14 23:01:08,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:01:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-10-14 23:01:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4640. [2020-10-14 23:01:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2020-10-14 23:01:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 7457 transitions. [2020-10-14 23:01:09,108 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 7457 transitions. Word has length 59 [2020-10-14 23:01:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:01:09,109 INFO L479 AbstractCegarLoop]: Abstraction has 4640 states and 7457 transitions. [2020-10-14 23:01:09,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:01:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 7457 transitions. [2020-10-14 23:01:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:01:09,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:01:09,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:09,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:01:09,118 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:01:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:01:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1632529598, now seen corresponding path program 1 times [2020-10-14 23:01:09,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:01:09,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455697186] [2020-10-14 23:01:09,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:01:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:10,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 23:01:10,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:01:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-14 23:01:10,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:10,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:01:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:01:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 23:01:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:01:11,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:01:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:11,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:11,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:01:11,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:11,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:01:11,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:11,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:01:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:01:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:01:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:11,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:01:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:11,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:11,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:01:11,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:01:11,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 23:01:11,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:11,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:01:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:01:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:01:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:01:11,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455697186] [2020-10-14 23:01:11,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:01:11,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:01:11,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954493993] [2020-10-14 23:01:11,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:01:11,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:01:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:01:11,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:01:11,481 INFO L87 Difference]: Start difference. First operand 4640 states and 7457 transitions. Second operand 6 states. [2020-10-14 23:01:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:01:49,246 INFO L93 Difference]: Finished difference Result 13639 states and 22210 transitions. [2020-10-14 23:01:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:01:49,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-14 23:01:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:01:49,331 INFO L225 Difference]: With dead ends: 13639 [2020-10-14 23:01:49,332 INFO L226 Difference]: Without dead ends: 9005 [2020-10-14 23:01:49,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 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 23:01:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9005 states. [2020-10-14 23:01:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9005 to 8984. [2020-10-14 23:01:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8984 states. [2020-10-14 23:01:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8984 states to 8984 states and 12633 transitions. [2020-10-14 23:01:49,732 INFO L78 Accepts]: Start accepts. Automaton has 8984 states and 12633 transitions. Word has length 134 [2020-10-14 23:01:49,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:01:49,733 INFO L479 AbstractCegarLoop]: Abstraction has 8984 states and 12633 transitions. [2020-10-14 23:01:49,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:01:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8984 states and 12633 transitions. [2020-10-14 23:01:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 23:01:49,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:01:49,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:49,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:01:49,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:01:49,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:01:49,747 INFO L82 PathProgramCache]: Analyzing trace with hash 302068576, now seen corresponding path program 1 times [2020-10-14 23:01:49,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:01:49,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465665898] [2020-10-14 23:01:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:01:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:51,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:52,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:52,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 23:01:52,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:01:52,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2312 [2020-10-14 23:01:52,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:52,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:01:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:01:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:01:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:01:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:52,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:52,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:01:52,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:52,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:01:52,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:52,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:01:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:01:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:01:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:01:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:01:52,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:01:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:01:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:01:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:01:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 23:01:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:01:52,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:01:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:01:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:01:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:01:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:01:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:01:52,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465665898] [2020-10-14 23:01:52,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:01:52,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:01:52,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365498874] [2020-10-14 23:01:52,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:01:52,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:01:52,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:01:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:01:52,869 INFO L87 Difference]: Start difference. First operand 8984 states and 12633 transitions. Second operand 7 states. [2020-10-14 23:02:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:02:47,014 INFO L93 Difference]: Finished difference Result 27312 states and 39478 transitions. [2020-10-14 23:02:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:02:47,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 160 [2020-10-14 23:02:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:02:47,108 INFO L225 Difference]: With dead ends: 27312 [2020-10-14 23:02:47,108 INFO L226 Difference]: Without dead ends: 18334 [2020-10-14 23:02:47,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:02:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18334 states. [2020-10-14 23:02:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18334 to 18120. [2020-10-14 23:02:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18120 states. [2020-10-14 23:02:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18120 states to 18120 states and 23669 transitions. [2020-10-14 23:02:47,603 INFO L78 Accepts]: Start accepts. Automaton has 18120 states and 23669 transitions. Word has length 160 [2020-10-14 23:02:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:02:47,606 INFO L479 AbstractCegarLoop]: Abstraction has 18120 states and 23669 transitions. [2020-10-14 23:02:47,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:02:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18120 states and 23669 transitions. [2020-10-14 23:02:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 23:02:47,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:02:47,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:47,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:02:47,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:02:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:02:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2003054668, now seen corresponding path program 1 times [2020-10-14 23:02:47,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:02:47,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966499477] [2020-10-14 23:02:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:02:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:48,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:49,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:49,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 23:02:49,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:02:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-10-14 23:02:49,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:49,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:02:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:02:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 23:02:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:49,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:02:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:49,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:49,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:49,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:02:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:02:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:02:49,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:49,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:02:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:02:49,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:02:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:02:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:02:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:02:49,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:02:49,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:02:49,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:02:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:02:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-14 23:02:49,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:02:49,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:02:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:02:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:02:49,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:02:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:02:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:02:50,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966499477] [2020-10-14 23:02:50,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:02:50,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:02:50,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861363021] [2020-10-14 23:02:50,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:02:50,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:02:50,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:02:50,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:02:50,109 INFO L87 Difference]: Start difference. First operand 18120 states and 23669 transitions. Second operand 7 states. [2020-10-14 23:03:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:03:49,435 INFO L93 Difference]: Finished difference Result 55170 states and 75702 transitions. [2020-10-14 23:03:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:03:49,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-10-14 23:03:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:03:49,619 INFO L225 Difference]: With dead ends: 55170 [2020-10-14 23:03:49,620 INFO L226 Difference]: Without dead ends: 37056 [2020-10-14 23:03:49,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:03:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37056 states. [2020-10-14 23:03:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37056 to 36537. [2020-10-14 23:03:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36537 states. [2020-10-14 23:03:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36537 states to 36537 states and 46219 transitions. [2020-10-14 23:03:50,562 INFO L78 Accepts]: Start accepts. Automaton has 36537 states and 46219 transitions. Word has length 182 [2020-10-14 23:03:50,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:03:50,564 INFO L479 AbstractCegarLoop]: Abstraction has 36537 states and 46219 transitions. [2020-10-14 23:03:50,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:03:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 36537 states and 46219 transitions. [2020-10-14 23:03:50,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 23:03:50,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:50,570 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:50,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:03:50,570 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:50,571 INFO L82 PathProgramCache]: Analyzing trace with hash 272643230, now seen corresponding path program 1 times [2020-10-14 23:03:50,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:50,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767619913] [2020-10-14 23:03:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:50,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:52,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:54,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:54,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 23:03:54,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:03:54,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4196 [2020-10-14 23:03:54,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:54,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:03:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 23:03:54,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:54,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:54,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:54,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:03:54,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:54,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:55,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:03:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:55,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:55,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 23:03:55,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:03:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 23:03:55,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:55,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:55,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 23:03:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-14 23:03:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:55,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:55,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:03:55,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:55,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 23:03:55,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:55,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:03:55,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:03:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:03:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:03:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 105 proven. 74 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:03:55,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767619913] [2020-10-14 23:03:55,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:03:55,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:03:55,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538674711] [2020-10-14 23:03:55,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:03:55,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:55,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:03:55,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:03:55,792 INFO L87 Difference]: Start difference. First operand 36537 states and 46219 transitions. Second operand 8 states.