/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:54:37,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:54:37,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:54:37,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:54:37,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:54:37,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:54:37,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:54:37,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:54:37,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:54:37,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:54:37,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:54:37,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:54:37,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:54:37,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:54:37,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:54:37,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:54:37,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:54:37,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:54:37,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:54:37,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:54:37,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:54:37,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:54:37,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:54:37,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:54:37,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:54:37,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:54:37,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:54:37,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:54:37,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:54:37,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:54:37,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:54:37,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:54:37,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:54:37,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:54:37,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:54:37,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:54:37,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:54:37,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:54:37,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:54:37,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:54:37,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:54:37,656 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 [2020-10-29 08:54:37,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:54:37,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:54:37,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:54:37,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:54:37,714 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:54:37,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:54:37,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:54:37,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:54:37,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:54:37,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:54:37,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:54:37,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:54:37,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:54:37,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:54:37,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:54:37,718 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:54:37,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:54:37,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:54:37,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:54:37,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:54:37,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:54:37,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:54:37,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:54:37,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:54:37,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:54:37,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:54:37,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:54:37,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:54:37,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:54:37,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:54:38,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:54:38,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:54:38,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:54:38,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:54:38,232 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:54:38,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45.c [2020-10-29 08:54:38,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0a8301e8/49786c381d86453eaf4b438727494361/FLAG4c2684f7d [2020-10-29 08:54:39,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:54:39,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label45.c [2020-10-29 08:54:39,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0a8301e8/49786c381d86453eaf4b438727494361/FLAG4c2684f7d [2020-10-29 08:54:39,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0a8301e8/49786c381d86453eaf4b438727494361 [2020-10-29 08:54:39,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:54:39,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:54:39,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:54:39,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:54:39,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:54:39,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:54:39" (1/1) ... [2020-10-29 08:54:39,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434b4690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:39, skipping insertion in model container [2020-10-29 08:54:39,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:54:39" (1/1) ... [2020-10-29 08:54:39,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:54:40,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:54:42,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:54:42,538 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:54:43,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:54:43,872 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:54:43,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43 WrapperNode [2020-10-29 08:54:43,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:54:43,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:54:43,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:54:43,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:54:43,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:43,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:44,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:44,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:44,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:44,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:44,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (1/1) ... [2020-10-29 08:54:44,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:54:44,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:54:44,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:54:44,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:54:44,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (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 [2020-10-29 08:54:44,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:54:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:54:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:54:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:54:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:54:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:54:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 08:54:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 08:54:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-29 08:54:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:54:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:54:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:54:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:54:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 08:54:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 08:54:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-29 08:54:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:54:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:54:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:54:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:54:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:54:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:54:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:54:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:54:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:54:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:54:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:54:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:54:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:55:02,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:55:02,392 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:55:02,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:55:02 BoogieIcfgContainer [2020-10-29 08:55:02,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:55:02,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:55:02,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:55:02,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:55:02,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:54:39" (1/3) ... [2020-10-29 08:55:02,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37710013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:55:02, skipping insertion in model container [2020-10-29 08:55:02,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:54:43" (2/3) ... [2020-10-29 08:55:02,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37710013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:55:02, skipping insertion in model container [2020-10-29 08:55:02,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:55:02" (3/3) ... [2020-10-29 08:55:02,407 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label45.c [2020-10-29 08:55:02,422 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:55:02,429 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:55:02,444 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:55:02,484 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:55:02,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:55:02,484 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:55:02,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:55:02,485 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:55:02,485 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:55:02,485 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:55:02,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:55:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-29 08:55:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 08:55:02,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:55:02,552 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] [2020-10-29 08:55:02,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:55:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:55:02,561 INFO L82 PathProgramCache]: Analyzing trace with hash 662270829, now seen corresponding path program 1 times [2020-10-29 08:55:02,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:55:02,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450873929] [2020-10-29 08:55:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:55:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:03,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:03,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 08:55:03,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:55:03,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-29 08:55:03,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:03,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:55:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:55:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 08:55:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:55:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:55:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:55:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:55:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:55:03,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:03,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:55:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:55:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:55:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:55:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:55:03,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450873929] [2020-10-29 08:55:03,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:55:03,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:55:03,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015119949] [2020-10-29 08:55:03,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:55:03,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:55:03,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:55:03,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:55:03,722 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 5 states. [2020-10-29 08:55:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:55:51,033 INFO L93 Difference]: Finished difference Result 6484 states and 12306 transitions. [2020-10-29 08:55:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:55:51,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-29 08:55:51,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:55:51,106 INFO L225 Difference]: With dead ends: 6484 [2020-10-29 08:55:51,106 INFO L226 Difference]: Without dead ends: 4635 [2020-10-29 08:55:51,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:55:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2020-10-29 08:55:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2020-10-29 08:55:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2020-10-29 08:55:51,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7766 transitions. [2020-10-29 08:55:51,454 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7766 transitions. Word has length 54 [2020-10-29 08:55:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:55:51,455 INFO L481 AbstractCegarLoop]: Abstraction has 4627 states and 7766 transitions. [2020-10-29 08:55:51,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:55:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7766 transitions. [2020-10-29 08:55:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 08:55:51,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:55:51,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:55:51,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:55:51,464 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:55:51,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:55:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1133668943, now seen corresponding path program 1 times [2020-10-29 08:55:51,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:55:51,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149515810] [2020-10-29 08:55:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:55:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:54,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:54,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 08:55:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:55:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2988 [2020-10-29 08:55:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:54,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:54,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:55:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:55:54,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:55:54,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:55:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:55:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:54,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:54,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:55:54,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:55:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:55:54,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:54,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:55:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:55:54,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:55:54,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:55:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:55:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:55:54,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:55:55,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:55:55,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:55:55,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:55:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-29 08:55:55,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:55:55,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:55:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:55:55,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:55:55,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:55:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:55:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:55:55,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149515810] [2020-10-29 08:55:55,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:55:55,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:55:55,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911468460] [2020-10-29 08:55:55,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:55:55,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:55:55,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:55:55,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:55:55,460 INFO L87 Difference]: Start difference. First operand 4627 states and 7766 transitions. Second operand 6 states. [2020-10-29 08:56:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:56:47,017 INFO L93 Difference]: Finished difference Result 13675 states and 23272 transitions. [2020-10-29 08:56:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:56:47,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-10-29 08:56:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:56:47,106 INFO L225 Difference]: With dead ends: 13675 [2020-10-29 08:56:47,107 INFO L226 Difference]: Without dead ends: 9054 [2020-10-29 08:56:47,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:56:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2020-10-29 08:56:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 9017. [2020-10-29 08:56:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9017 states. [2020-10-29 08:56:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 13295 transitions. [2020-10-29 08:56:47,538 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 13295 transitions. Word has length 127 [2020-10-29 08:56:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:56:47,539 INFO L481 AbstractCegarLoop]: Abstraction has 9017 states and 13295 transitions. [2020-10-29 08:56:47,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:56:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 13295 transitions. [2020-10-29 08:56:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 08:56:47,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:56:47,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:56:47,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:56:47,546 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:56:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:56:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2060639973, now seen corresponding path program 1 times [2020-10-29 08:56:47,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:56:47,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770493209] [2020-10-29 08:56:47,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:56:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:47,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:49,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:49,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-29 08:56:49,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:56:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-29 08:56:49,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:49,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:56:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:56:49,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:56:49,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:56:49,684 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:56:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:56:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:49,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:56:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:56:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:56:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:56:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:56:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:56:49,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:56:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:56:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:56:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:56:50,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 08:56:50,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:56:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 08:56:50,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:56:50,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:56:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:56:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:56:50,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:56:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:56:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:56:50,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770493209] [2020-10-29 08:56:50,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:56:50,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:56:50,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746813780] [2020-10-29 08:56:50,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:56:50,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:56:50,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:56:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:56:50,206 INFO L87 Difference]: Start difference. First operand 9017 states and 13295 transitions. Second operand 7 states. [2020-10-29 08:56:55,784 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:57:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:57:39,494 INFO L93 Difference]: Finished difference Result 22701 states and 34137 transitions. [2020-10-29 08:57:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:57:39,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-10-29 08:57:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:57:39,577 INFO L225 Difference]: With dead ends: 22701 [2020-10-29 08:57:39,577 INFO L226 Difference]: Without dead ends: 13690 [2020-10-29 08:57:39,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:57:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13690 states. [2020-10-29 08:57:40,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13690 to 13568. [2020-10-29 08:57:40,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13568 states. [2020-10-29 08:57:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13568 states to 13568 states and 19157 transitions. [2020-10-29 08:57:40,050 INFO L78 Accepts]: Start accepts. Automaton has 13568 states and 19157 transitions. Word has length 158 [2020-10-29 08:57:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:57:40,051 INFO L481 AbstractCegarLoop]: Abstraction has 13568 states and 19157 transitions. [2020-10-29 08:57:40,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:57:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 13568 states and 19157 transitions. [2020-10-29 08:57:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 08:57:40,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:57:40,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:57:40,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:57:40,056 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:57:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:57:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 599048133, now seen corresponding path program 1 times [2020-10-29 08:57:40,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:57:40,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322301427] [2020-10-29 08:57:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:57:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:40,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:41,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:43,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:43,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2970 [2020-10-29 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:57:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 08:57:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:57:43,334 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:57:43,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:57:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:43,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:57:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:57:43,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:43,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:57:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:57:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:57:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:57:43,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:57:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:57:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:57:43,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:57:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 08:57:43,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:57:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 08:57:43,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:57:43,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:57:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:57:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:57:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 08:57:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:57:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:57:43,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322301427] [2020-10-29 08:57:43,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:57:43,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:57:43,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274878615] [2020-10-29 08:57:43,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:57:43,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:57:43,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:57:43,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:57:43,967 INFO L87 Difference]: Start difference. First operand 13568 states and 19157 transitions. Second operand 7 states. [2020-10-29 08:57:44,137 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 68