/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_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:09:40,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:09:40,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:09:40,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:09:40,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:09:40,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:09:40,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:09:40,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:09:40,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:09:40,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:09:40,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:09:40,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:09:40,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:09:40,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:09:40,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:09:40,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:09:40,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:09:40,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:09:40,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:09:40,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:09:40,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:09:40,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:09:40,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:09:40,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:09:40,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:09:40,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:09:40,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:09:40,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:09:40,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:09:40,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:09:40,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:09:40,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:09:40,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:09:40,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:09:40,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:09:40,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:09:40,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:09:40,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:09:40,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:09:40,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:09:40,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:09:40,504 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 23:09:40,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:09:40,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:09:40,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:09:40,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:09:40,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:09:40,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:09:40,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:09:40,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:09:40,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:09:40,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:09:40,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:09:40,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:09:40,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:09:40,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:09:40,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:09:40,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:09:40,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:09:40,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:09:40,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:09:40,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:09:40,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:09:40,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:09:40,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:09:40,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:09:40,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:09:40,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:09:40,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:09:40,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:09:40,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:09:40,538 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 23:09:40,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:09:40,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:09:40,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:09:40,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:09:40,944 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:09:40,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2020-10-14 23:09:41,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/169a54dbe/a8ffb90a58ee4285a60ca155401dc8d1/FLAGbfd336dbb [2020-10-14 23:09:42,224 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:09:42,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label48.c [2020-10-14 23:09:42,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/169a54dbe/a8ffb90a58ee4285a60ca155401dc8d1/FLAGbfd336dbb [2020-10-14 23:09:42,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/169a54dbe/a8ffb90a58ee4285a60ca155401dc8d1 [2020-10-14 23:09:42,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:09:42,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:09:42,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:09:42,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:09:42,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:09:42,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:42" (1/1) ... [2020-10-14 23:09:42,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f43d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42, skipping insertion in model container [2020-10-14 23:09:42,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:42" (1/1) ... [2020-10-14 23:09:42,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:09:42,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:09:45,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:09:45,763 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:09:47,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:09:47,133 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:09:47,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47 WrapperNode [2020-10-14 23:09:47,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:09:47,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:09:47,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:09:47,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:09:47,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (1/1) ... [2020-10-14 23:09:47,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:09:47,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:09:47,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:09:47,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:09:47,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (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 23:09:47,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:09:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:09:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:09:47,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:09:47,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:09:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:09:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:09:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:09:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:09:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:09:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:09:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:09:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:09:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:09:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:09:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:09:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:09:47,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:09:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:09:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:09:47,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:10:04,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:10:04,299 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:10:04,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:04 BoogieIcfgContainer [2020-10-14 23:10:04,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:10:04,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:10:04,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:10:04,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:10:04,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:09:42" (1/3) ... [2020-10-14 23:10:04,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0ea25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:04, skipping insertion in model container [2020-10-14 23:10:04,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:47" (2/3) ... [2020-10-14 23:10:04,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0ea25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:10:04, skipping insertion in model container [2020-10-14 23:10:04,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:10:04" (3/3) ... [2020-10-14 23:10:04,349 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label48.c [2020-10-14 23:10:04,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:10:04,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:10:04,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:10:04,460 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:10:04,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:10:04,461 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:10:04,461 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:10:04,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:10:04,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:10:04,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:10:04,462 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:10:04,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:10:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 23:10:04,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:04,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:10:04,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash 972307908, now seen corresponding path program 1 times [2020-10-14 23:10:04,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:04,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836573310] [2020-10-14 23:10:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:04,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:05,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:10:05,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-14 23:10:05,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:05,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:10:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:05,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:10:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:10:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:05,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:05,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:05,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:10:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:05,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:05,765 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 23:10:05,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836573310] [2020-10-14 23:10:05,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:10:05,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:10:05,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870498541] [2020-10-14 23:10:05,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:10:05,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:10:05,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:10:05,811 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 5 states. [2020-10-14 23:10:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:10:48,102 INFO L93 Difference]: Finished difference Result 6572 states and 12488 transitions. [2020-10-14 23:10:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:10:48,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 23:10:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:10:48,179 INFO L225 Difference]: With dead ends: 6572 [2020-10-14 23:10:48,180 INFO L226 Difference]: Without dead ends: 4727 [2020-10-14 23:10:48,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:10:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2020-10-14 23:10:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4624. [2020-10-14 23:10:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4624 states. [2020-10-14 23:10:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 8165 transitions. [2020-10-14 23:10:48,498 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 8165 transitions. Word has length 71 [2020-10-14 23:10:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:10:48,500 INFO L479 AbstractCegarLoop]: Abstraction has 4624 states and 8165 transitions. [2020-10-14 23:10:48,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:10:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 8165 transitions. [2020-10-14 23:10:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 23:10:48,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:48,509 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, 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] [2020-10-14 23:10:48,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:10:48,510 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:48,511 INFO L82 PathProgramCache]: Analyzing trace with hash 682468142, now seen corresponding path program 1 times [2020-10-14 23:10:48,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:48,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876480502] [2020-10-14 23:10:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:50,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:50,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 23:10:50,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:10:50,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-10-14 23:10:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:50,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:10:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 23:10:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 23:10:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:50,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:10:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:50,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:50,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 23:10:50,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:10:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:50,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:50,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:10:50,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:10:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 23:10:50,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:50,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:10:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:10:50,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:10:50,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:10:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:10:50,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876480502] [2020-10-14 23:10:50,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:10:50,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 23:10:50,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905643229] [2020-10-14 23:10:50,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:10:50,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:10:50,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:10:50,987 INFO L87 Difference]: Start difference. First operand 4624 states and 8165 transitions. Second operand 6 states. [2020-10-14 23:11:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:11:22,418 INFO L93 Difference]: Finished difference Result 13553 states and 24250 transitions. [2020-10-14 23:11:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 23:11:22,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-14 23:11:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:11:22,484 INFO L225 Difference]: With dead ends: 13553 [2020-10-14 23:11:22,484 INFO L226 Difference]: Without dead ends: 8935 [2020-10-14 23:11:22,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:11:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8935 states. [2020-10-14 23:11:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8935 to 8920. [2020-10-14 23:11:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8920 states. [2020-10-14 23:11:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 13445 transitions. [2020-10-14 23:11:22,889 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 13445 transitions. Word has length 146 [2020-10-14 23:11:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:11:22,893 INFO L479 AbstractCegarLoop]: Abstraction has 8920 states and 13445 transitions. [2020-10-14 23:11:22,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:11:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 13445 transitions. [2020-10-14 23:11:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 23:11:22,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:11:22,910 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:11:22,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:11:22,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:11:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:11:22,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1529536518, now seen corresponding path program 1 times [2020-10-14 23:11:22,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:11:22,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334851578] [2020-10-14 23:11:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:11:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:25,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:25,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 23:11:25,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:11:25,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2601 [2020-10-14 23:11:25,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:25,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:11:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 23:11:25,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:11:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:11:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:25,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:25,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:11:25,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:25,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:11:25,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:25,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:25,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:11:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:25,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:11:25,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:11:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:25,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:11:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:11:25,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:25,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:11:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 23:11:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:11:26,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334851578] [2020-10-14 23:11:26,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:11:26,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:11:26,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815678197] [2020-10-14 23:11:26,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:11:26,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:11:26,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:11:26,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:11:26,057 INFO L87 Difference]: Start difference. First operand 8920 states and 13445 transitions. Second operand 6 states. [2020-10-14 23:12:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:32,878 INFO L93 Difference]: Finished difference Result 27800 states and 45190 transitions. [2020-10-14 23:12:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:12:32,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-10-14 23:12:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:32,976 INFO L225 Difference]: With dead ends: 27800 [2020-10-14 23:12:32,976 INFO L226 Difference]: Without dead ends: 18886 [2020-10-14 23:12:33,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:12:33,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18886 states. [2020-10-14 23:12:33,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18886 to 17478. [2020-10-14 23:12:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17478 states. [2020-10-14 23:12:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17478 states to 17478 states and 26441 transitions. [2020-10-14 23:12:33,544 INFO L78 Accepts]: Start accepts. Automaton has 17478 states and 26441 transitions. Word has length 152 [2020-10-14 23:12:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:33,547 INFO L479 AbstractCegarLoop]: Abstraction has 17478 states and 26441 transitions. [2020-10-14 23:12:33,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:12:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17478 states and 26441 transitions. [2020-10-14 23:12:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 23:12:33,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:33,554 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, 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] [2020-10-14 23:12:33,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:12:33,555 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1043857852, now seen corresponding path program 1 times [2020-10-14 23:12:33,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:33,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469761997] [2020-10-14 23:12:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:34,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 23:12:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:12:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1269 [2020-10-14 23:12:34,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:34,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:34,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 23:12:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:35,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:35,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:35,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:35,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:35,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:12:35,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:35,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:35,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:35,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 23:12:35,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:12:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-14 23:12:35,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:35,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:35,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 23:12:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:12:35,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469761997] [2020-10-14 23:12:35,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:35,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:12:35,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063919990] [2020-10-14 23:12:35,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:35,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:35,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:35,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:35,820 INFO L87 Difference]: Start difference. First operand 17478 states and 26441 transitions. Second operand 7 states.