/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:03:18,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:03:18,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:03:18,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:03:18,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:03:18,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:03:18,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:03:18,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:03:18,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:03:18,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:03:18,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:03:18,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:03:18,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:03:18,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:03:18,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:03:18,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:03:18,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:03:18,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:03:18,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:03:18,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:03:18,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:03:18,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:03:18,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:03:18,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:03:18,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:03:18,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:03:18,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:03:18,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:03:18,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:03:18,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:03:18,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:03:18,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:03:18,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:03:18,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:03:18,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:03:18,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:03:18,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:03:18,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:03:18,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:03:18,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:03:18,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:03:18,378 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 23:03:18,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:03:18,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:03:18,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:03:18,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:03:18,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:03:18,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:03:18,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:03:18,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:03:18,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:03:18,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:03:18,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:03:18,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:03:18,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:03:18,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:03:18,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:03:18,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:03:18,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:03:18,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:03:18,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:03:18,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:03:18,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:03:18,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:03:18,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:03:18,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:03:18,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:03:18,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:03:18,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:03:18,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:03:18,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:03:18,426 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 23:03:18,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:03:18,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:03:18,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:03:18,836 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:03:18,837 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:03:18,838 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label28.c [2020-10-14 23:03:18,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de46b0f28/d9bfcd80cbf840189b83b30f815c5305/FLAG3d55483f6 [2020-10-14 23:03:20,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:03:20,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label28.c [2020-10-14 23:03:20,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de46b0f28/d9bfcd80cbf840189b83b30f815c5305/FLAG3d55483f6 [2020-10-14 23:03:20,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de46b0f28/d9bfcd80cbf840189b83b30f815c5305 [2020-10-14 23:03:20,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:03:20,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:03:20,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:03:20,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:03:20,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:03:20,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:03:20" (1/1) ... [2020-10-14 23:03:20,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:20, skipping insertion in model container [2020-10-14 23:03:20,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:03:20" (1/1) ... [2020-10-14 23:03:20,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:03:20,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:03:23,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:03:23,834 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:03:25,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:03:25,166 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:03:25,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25 WrapperNode [2020-10-14 23:03:25,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:03:25,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:03:25,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:03:25,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:03:25,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (1/1) ... [2020-10-14 23:03:25,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:03:25,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:03:25,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:03:25,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:03:25,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (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 23:03:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:03:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:03:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:03:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:03:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:03:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:03:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:03:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:03:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:03:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:03:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:03:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:03:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:03:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:03:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:03:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:03:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:03:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:03:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:03:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:03:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:03:41,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:03:41,348 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:03:41,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:03:41 BoogieIcfgContainer [2020-10-14 23:03:41,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:03:41,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:03:41,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:03:41,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:03:41,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:03:20" (1/3) ... [2020-10-14 23:03:41,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0eebf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:03:41, skipping insertion in model container [2020-10-14 23:03:41,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:25" (2/3) ... [2020-10-14 23:03:41,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0eebf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:03:41, skipping insertion in model container [2020-10-14 23:03:41,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:03:41" (3/3) ... [2020-10-14 23:03:41,399 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label28.c [2020-10-14 23:03:41,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:03:41,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:03:41,452 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:03:41,496 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:03:41,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:03:41,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:03:41,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:03:41,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:03:41,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:03:41,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:03:41,498 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:03:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:03:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:03:41,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:03:41,576 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] [2020-10-14 23:03:41,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:03:41,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:03:41,586 INFO L82 PathProgramCache]: Analyzing trace with hash -647832228, now seen corresponding path program 1 times [2020-10-14 23:03:41,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:03:41,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205524765] [2020-10-14 23:03:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:03:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:41,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:42,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:03:42,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-14 23:03:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:42,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:03:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:03:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:03:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:03:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:03:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:03:42,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:03:42,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:03:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:03:42,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:03:42,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:03:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:03:42,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:03:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:03:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:03:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:03:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:03:42,525 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 23:03:42,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205524765] [2020-10-14 23:03:42,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:03:42,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:03:42,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219307358] [2020-10-14 23:03:42,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:03:42,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:03:42,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:03:42,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:03:42,565 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:04:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:04:10,497 INFO L93 Difference]: Finished difference Result 5095 states and 9566 transitions. [2020-10-14 23:04:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:04:10,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 23:04:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:04:10,558 INFO L225 Difference]: With dead ends: 5095 [2020-10-14 23:04:10,558 INFO L226 Difference]: Without dead ends: 3254 [2020-10-14 23:04:10,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:04:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2020-10-14 23:04:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3208. [2020-10-14 23:04:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-14 23:04:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5177 transitions. [2020-10-14 23:04:10,821 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5177 transitions. Word has length 29 [2020-10-14 23:04:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:04:10,823 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 5177 transitions. [2020-10-14 23:04:10,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:04:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5177 transitions. [2020-10-14 23:04:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 23:04:10,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:04:10,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:10,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:04:10,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:04:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:04:10,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1060622502, now seen corresponding path program 1 times [2020-10-14 23:04:10,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:04:10,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717592378] [2020-10-14 23:04:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:04:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:13,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 23:04:13,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:04:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2071 [2020-10-14 23:04:13,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:13,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:04:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:04:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 23:04:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:04:13,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:04:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:13,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:13,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:04:13,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:04:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:04:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:13,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:04:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:04:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:04:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 23:04:13,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:04:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:04:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:04:13,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:04:13,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:04:13,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:04:13,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 23:04:13,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:04:13,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:04:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:04:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:04:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:04:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:04:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:04:13,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717592378] [2020-10-14 23:04:13,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:04:13,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:04:13,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68404473] [2020-10-14 23:04:13,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:04:13,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:04:13,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:04:13,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:04:13,558 INFO L87 Difference]: Start difference. First operand 3208 states and 5177 transitions. Second operand 8 states. [2020-10-14 23:05:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:05:06,700 INFO L93 Difference]: Finished difference Result 12275 states and 20206 transitions. [2020-10-14 23:05:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:05:06,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-14 23:05:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:05:06,776 INFO L225 Difference]: With dead ends: 12275 [2020-10-14 23:05:06,777 INFO L226 Difference]: Without dead ends: 9073 [2020-10-14 23:05:06,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:05:06,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2020-10-14 23:05:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 9028. [2020-10-14 23:05:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9028 states. [2020-10-14 23:05:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 13496 transitions. [2020-10-14 23:05:07,201 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 13496 transitions. Word has length 104 [2020-10-14 23:05:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:05:07,202 INFO L479 AbstractCegarLoop]: Abstraction has 9028 states and 13496 transitions. [2020-10-14 23:05:07,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:05:07,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 13496 transitions. [2020-10-14 23:05:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 23:05:07,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:05:07,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:05:07,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:05:07,220 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:05:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:05:07,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1802729379, now seen corresponding path program 1 times [2020-10-14 23:05:07,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:05:07,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235575469] [2020-10-14 23:05:07,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:05:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:07,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:08,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 23:05:08,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:05:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1467 [2020-10-14 23:05:08,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:08,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:05:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:05:08,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 23:05:08,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:05:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:05:08,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:05:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:08,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:05:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:05:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:05:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:05:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:05:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:05:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:05:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 23:05:09,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:05:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-14 23:05:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:05:09,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:05:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:05:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:05:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 23:05:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:05:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:05:09,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235575469] [2020-10-14 23:05:09,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:05:09,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:05:09,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765504240] [2020-10-14 23:05:09,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:05:09,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:05:09,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:05:09,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:05:09,682 INFO L87 Difference]: Start difference. First operand 9028 states and 13496 transitions. Second operand 7 states. [2020-10-14 23:06:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:06:15,792 INFO L93 Difference]: Finished difference Result 27299 states and 41817 transitions. [2020-10-14 23:06:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:06:15,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-10-14 23:06:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:06:15,883 INFO L225 Difference]: With dead ends: 27299 [2020-10-14 23:06:15,883 INFO L226 Difference]: Without dead ends: 18277 [2020-10-14 23:06:15,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:06:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18277 states. [2020-10-14 23:06:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18277 to 18065. [2020-10-14 23:06:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18065 states. [2020-10-14 23:06:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18065 states to 18065 states and 24568 transitions. [2020-10-14 23:06:16,464 INFO L78 Accepts]: Start accepts. Automaton has 18065 states and 24568 transitions. Word has length 156 [2020-10-14 23:06:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:06:16,466 INFO L479 AbstractCegarLoop]: Abstraction has 18065 states and 24568 transitions. [2020-10-14 23:06:16,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:06:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 18065 states and 24568 transitions. [2020-10-14 23:06:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-14 23:06:16,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:06:16,474 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 23:06:16,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:06:16,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:06:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:06:16,475 INFO L82 PathProgramCache]: Analyzing trace with hash 614951400, now seen corresponding path program 1 times [2020-10-14 23:06:16,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:06:16,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892385218] [2020-10-14 23:06:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:06:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:16,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:21,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 23:06:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:06:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4865 [2020-10-14 23:06:21,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:21,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:06:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:06:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 23:06:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:06:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:21,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:06:21,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:06:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:21,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:06:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:06:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:06:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:21,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:06:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:21,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:21,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:06:21,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:06:21,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 23:06:21,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:21,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:06:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:06:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:06:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 23:06:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:06:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:06:22,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:06:22,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:06:22,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:06:22,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 23:06:22,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:06:22,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:06:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:06:22,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 23:06:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:06:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:06:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:06:22,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892385218] [2020-10-14 23:06:22,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:06:22,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:06:22,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659523034] [2020-10-14 23:06:22,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:06:22,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:06:22,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:06:22,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:06:22,266 INFO L87 Difference]: Start difference. First operand 18065 states and 24568 transitions. Second operand 7 states.