/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:12:36,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:12:36,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:12:36,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:12:36,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:12:36,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:12:36,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:12:36,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:12:36,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:12:36,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:12:36,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:12:36,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:12:36,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:12:36,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:12:36,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:12:36,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:12:36,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:12:36,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:12:36,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:12:36,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:12:36,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:12:36,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:12:36,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:12:36,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:12:36,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:12:36,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:12:36,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:12:36,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:12:36,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:12:36,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:12:36,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:12:36,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:12:36,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:12:36,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:12:36,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:12:36,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:12:36,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:12:36,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:12:36,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:12:36,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:12:36,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:12:36,644 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 [2020-10-28 12:12:36,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:12:36,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:12:36,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:12:36,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:12:36,673 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:12:36,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:12:36,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:12:36,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:12:36,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:12:36,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:12:36,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:12:36,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:12:36,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:12:36,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:12:36,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:12:36,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:12:36,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:12:36,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:12:36,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:12:36,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:12:36,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:12:36,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:12:36,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:12:36,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:12:36,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:12:36,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:12:36,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:12:36,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:12:36,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:12:36,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:12:37,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:12:37,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:12:37,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:12:37,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:12:37,172 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:12:37,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2020-10-28 12:12:37,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d3458fb1/50d86e20918c499fbbbc04130615081a/FLAG88e9e743c [2020-10-28 12:12:38,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:12:38,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2020-10-28 12:12:38,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d3458fb1/50d86e20918c499fbbbc04130615081a/FLAG88e9e743c [2020-10-28 12:12:38,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d3458fb1/50d86e20918c499fbbbc04130615081a [2020-10-28 12:12:38,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:12:38,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:12:38,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:12:38,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:12:38,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:12:38,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:12:38" (1/1) ... [2020-10-28 12:12:38,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b662051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:38, skipping insertion in model container [2020-10-28 12:12:38,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:12:38" (1/1) ... [2020-10-28 12:12:38,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:12:39,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:12:40,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:12:40,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:12:41,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:12:41,203 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:12:41,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41 WrapperNode [2020-10-28 12:12:41,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:12:41,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:12:41,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:12:41,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:12:41,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (1/1) ... [2020-10-28 12:12:41,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:12:41,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:12:41,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:12:41,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:12:41,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (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 [2020-10-28 12:12:41,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:12:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:12:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:12:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:12:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:12:41,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:12:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:12:41,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:12:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:12:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:12:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:12:41,644 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:12:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:12:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:12:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:12:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:12:41,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:12:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:12:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:12:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:12:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:12:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:12:41,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:12:41,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:12:41,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:12:46,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:12:46,645 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:12:46,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:12:46 BoogieIcfgContainer [2020-10-28 12:12:46,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:12:46,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:12:46,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:12:46,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:12:46,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:12:38" (1/3) ... [2020-10-28 12:12:46,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aa0d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:12:46, skipping insertion in model container [2020-10-28 12:12:46,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:41" (2/3) ... [2020-10-28 12:12:46,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48aa0d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:12:46, skipping insertion in model container [2020-10-28 12:12:46,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:12:46" (3/3) ... [2020-10-28 12:12:46,668 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label00.c [2020-10-28 12:12:46,681 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:12:46,688 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:12:46,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:12:46,753 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:12:46,753 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:12:46,754 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:12:46,754 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:12:46,754 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:12:46,754 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:12:46,754 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:12:46,754 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:12:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:12:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 12:12:46,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:46,811 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] [2020-10-28 12:12:46,811 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:46,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:46,819 INFO L82 PathProgramCache]: Analyzing trace with hash 34710452, now seen corresponding path program 1 times [2020-10-28 12:12:46,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:46,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270163061] [2020-10-28 12:12:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 12:12:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-28 12:12:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:47,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:12:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:12:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 12:12:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:12:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:47,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:47,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:47,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:47,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:47,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:12:47,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:47,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:47,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:12:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:12:47,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270163061] [2020-10-28 12:12:47,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:12:47,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:12:47,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232256701] [2020-10-28 12:12:47,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:12:47,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:47,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:12:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:12:47,877 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:12:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:12:58,627 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-28 12:12:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:12:58,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 12:12:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:12:58,670 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:12:58,671 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:12:58,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:12:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-28 12:12:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-28 12:12:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-28 12:12:58,857 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 22 [2020-10-28 12:12:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:12:58,857 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-28 12:12:58,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:12:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-28 12:12:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 12:12:58,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:12:58,863 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:12:58,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:12:58,863 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:12:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:12:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash -607903406, now seen corresponding path program 1 times [2020-10-28 12:12:58,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:12:58,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246736887] [2020-10-28 12:12:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:12:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:12:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:59,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-28 12:12:59,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:12:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:12:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 12:12:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:12:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:12:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:12:59,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:12:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:12:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:12:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:12:59,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:12:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:12:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:12:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:12:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:12:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:12:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:12:59,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:12:59,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:12:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:12:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:12:59,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:12:59,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:12:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:12:59,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246736887] [2020-10-28 12:12:59,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:12:59,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:12:59,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937044089] [2020-10-28 12:12:59,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:12:59,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:12:59,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:12:59,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:12:59,657 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 5 states. [2020-10-28 12:13:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:11,114 INFO L93 Difference]: Finished difference Result 4684 states and 7299 transitions. [2020-10-28 12:13:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:13:11,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-28 12:13:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:11,135 INFO L225 Difference]: With dead ends: 4684 [2020-10-28 12:13:11,136 INFO L226 Difference]: Without dead ends: 3134 [2020-10-28 12:13:11,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:13:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2020-10-28 12:13:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 3123. [2020-10-28 12:13:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3123 states. [2020-10-28 12:13:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4589 transitions. [2020-10-28 12:13:11,311 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4589 transitions. Word has length 97 [2020-10-28 12:13:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:11,312 INFO L481 AbstractCegarLoop]: Abstraction has 3123 states and 4589 transitions. [2020-10-28 12:13:11,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:13:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4589 transitions. [2020-10-28 12:13:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 12:13:11,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:11,322 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:13:11,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:13:11,322 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:11,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash -112162802, now seen corresponding path program 1 times [2020-10-28 12:13:11,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:11,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133993475] [2020-10-28 12:13:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:12,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:12,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:13:12,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-28 12:13:12,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:12,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:13:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:13:12,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:12,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:12,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:12,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:13:12,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:12,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:12,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:12,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:13:12,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:12,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:13:12,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:12,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:13:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:12,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133993475] [2020-10-28 12:13:12,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:12,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:13:12,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510449767] [2020-10-28 12:13:12,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:12,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:12,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:12,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:12,680 INFO L87 Difference]: Start difference. First operand 3123 states and 4589 transitions. Second operand 7 states. [2020-10-28 12:13:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:25,656 INFO L93 Difference]: Finished difference Result 9484 states and 14172 transitions. [2020-10-28 12:13:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:13:25,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-28 12:13:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:25,703 INFO L225 Difference]: With dead ends: 9484 [2020-10-28 12:13:25,703 INFO L226 Difference]: Without dead ends: 6367 [2020-10-28 12:13:25,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:13:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2020-10-28 12:13:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6322. [2020-10-28 12:13:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6322 states. [2020-10-28 12:13:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 8607 transitions. [2020-10-28 12:13:25,901 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 8607 transitions. Word has length 99 [2020-10-28 12:13:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:25,902 INFO L481 AbstractCegarLoop]: Abstraction has 6322 states and 8607 transitions. [2020-10-28 12:13:25,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 8607 transitions. [2020-10-28 12:13:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 12:13:25,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:25,904 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:13:25,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:13:25,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:25,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:25,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1256088318, now seen corresponding path program 1 times [2020-10-28 12:13:25,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:25,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603064995] [2020-10-28 12:13:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:27,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:27,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:13:27,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-28 12:13:27,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:27,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:27,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:27,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:13:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:27,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:27,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:27,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:27,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:13:27,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:27,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:27,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:27,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:27,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:27,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:13:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:13:27,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:13:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:27,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:13:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:27,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603064995] [2020-10-28 12:13:27,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:27,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:13:27,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811670860] [2020-10-28 12:13:27,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:27,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:27,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:27,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:27,527 INFO L87 Difference]: Start difference. First operand 6322 states and 8607 transitions. Second operand 7 states. [2020-10-28 12:13:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:41,579 INFO L93 Difference]: Finished difference Result 19272 states and 26967 transitions. [2020-10-28 12:13:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:13:41,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-28 12:13:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:13:41,658 INFO L225 Difference]: With dead ends: 19272 [2020-10-28 12:13:41,658 INFO L226 Difference]: Without dead ends: 12956 [2020-10-28 12:13:41,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:13:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12956 states. [2020-10-28 12:13:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12956 to 11284. [2020-10-28 12:13:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11284 states. [2020-10-28 12:13:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 14944 transitions. [2020-10-28 12:13:42,049 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 14944 transitions. Word has length 107 [2020-10-28 12:13:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:13:42,053 INFO L481 AbstractCegarLoop]: Abstraction has 11284 states and 14944 transitions. [2020-10-28 12:13:42,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:13:42,053 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 14944 transitions. [2020-10-28 12:13:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 12:13:42,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:13:42,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:13:42,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:13:42,063 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:13:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:13:42,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1278354400, now seen corresponding path program 1 times [2020-10-28 12:13:42,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:13:42,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78582815] [2020-10-28 12:13:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:13:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:42,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:42,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:42,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 12:13:42,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:13:42,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-28 12:13:42,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:42,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:13:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:13:42,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:13:42,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:13:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:43,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:13:43,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:43,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:13:43,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:13:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:13:43,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:13:43,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:13:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:13:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:13:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:13:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:13:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:13:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 12:13:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:13:43,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:13:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:13:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:13:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:13:43,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:13:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:13:43,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78582815] [2020-10-28 12:13:43,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:13:43,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:13:43,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474791930] [2020-10-28 12:13:43,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:13:43,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:13:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:13:43,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:13:43,316 INFO L87 Difference]: Start difference. First operand 11284 states and 14944 transitions. Second operand 7 states. [2020-10-28 12:13:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:13:59,942 INFO L93 Difference]: Finished difference Result 33047 states and 46556 transitions. [2020-10-28 12:13:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:13:59,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-28 12:13:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:00,063 INFO L225 Difference]: With dead ends: 33047 [2020-10-28 12:14:00,064 INFO L226 Difference]: Without dead ends: 21769 [2020-10-28 12:14:00,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:14:00,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21769 states. [2020-10-28 12:14:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21769 to 21451. [2020-10-28 12:14:00,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21451 states. [2020-10-28 12:14:00,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21451 states to 21451 states and 27784 transitions. [2020-10-28 12:14:00,875 INFO L78 Accepts]: Start accepts. Automaton has 21451 states and 27784 transitions. Word has length 112 [2020-10-28 12:14:00,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:00,876 INFO L481 AbstractCegarLoop]: Abstraction has 21451 states and 27784 transitions. [2020-10-28 12:14:00,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 21451 states and 27784 transitions. [2020-10-28 12:14:00,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 12:14:00,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:00,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:00,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:14:00,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:00,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1655599060, now seen corresponding path program 1 times [2020-10-28 12:14:00,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:00,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290156379] [2020-10-28 12:14:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:02,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 12:14:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1741 [2020-10-28 12:14:02,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:02,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:14:02,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:14:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:02,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:02,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:14:02,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:02,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:14:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:03,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:14:03,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 12:14:03,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:03,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:03,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:14:03,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:14:03,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290156379] [2020-10-28 12:14:03,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:14:03,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:14:03,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737736212] [2020-10-28 12:14:03,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:14:03,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:03,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:14:03,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:14:03,577 INFO L87 Difference]: Start difference. First operand 21451 states and 27784 transitions. Second operand 7 states. [2020-10-28 12:14:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:17,493 INFO L93 Difference]: Finished difference Result 44137 states and 57346 transitions. [2020-10-28 12:14:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:14:17,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-28 12:14:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:17,586 INFO L225 Difference]: With dead ends: 44137 [2020-10-28 12:14:17,586 INFO L226 Difference]: Without dead ends: 22692 [2020-10-28 12:14:17,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:14:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22692 states. [2020-10-28 12:14:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22692 to 22317. [2020-10-28 12:14:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22317 states. [2020-10-28 12:14:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22317 states to 22317 states and 28723 transitions. [2020-10-28 12:14:18,365 INFO L78 Accepts]: Start accepts. Automaton has 22317 states and 28723 transitions. Word has length 170 [2020-10-28 12:14:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:18,366 INFO L481 AbstractCegarLoop]: Abstraction has 22317 states and 28723 transitions. [2020-10-28 12:14:18,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:14:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 22317 states and 28723 transitions. [2020-10-28 12:14:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-28 12:14:18,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:18,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:14:18,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:14:18,371 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash -846382232, now seen corresponding path program 1 times [2020-10-28 12:14:18,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:18,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126204888] [2020-10-28 12:14:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:18,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 12:14:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1607 [2020-10-28 12:14:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:14:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:14:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:20,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:20,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:20,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:14:20,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:20,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:20,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:20,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:14:20,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:20,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:14:20,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:20,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:14:20,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:14:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:20,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:20,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:14:20,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-28 12:14:20,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:20,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:14:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:14:20,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:14:20,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:14:20,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126204888] [2020-10-28 12:14:20,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:20,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:14:20,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347748266] [2020-10-28 12:14:20,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:14:20,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:20,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:14:20,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:14:20,891 INFO L87 Difference]: Start difference. First operand 22317 states and 28723 transitions. Second operand 8 states. [2020-10-28 12:14:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:14:48,433 INFO L93 Difference]: Finished difference Result 67172 states and 93561 transitions. [2020-10-28 12:14:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:14:48,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-10-28 12:14:48,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:14:48,578 INFO L225 Difference]: With dead ends: 67172 [2020-10-28 12:14:48,579 INFO L226 Difference]: Without dead ends: 42202 [2020-10-28 12:14:48,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:14:48,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42202 states. [2020-10-28 12:14:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42202 to 40510. [2020-10-28 12:14:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40510 states. [2020-10-28 12:14:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40510 states to 40510 states and 51450 transitions. [2020-10-28 12:14:49,813 INFO L78 Accepts]: Start accepts. Automaton has 40510 states and 51450 transitions. Word has length 210 [2020-10-28 12:14:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:14:49,813 INFO L481 AbstractCegarLoop]: Abstraction has 40510 states and 51450 transitions. [2020-10-28 12:14:49,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:14:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40510 states and 51450 transitions. [2020-10-28 12:14:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 12:14:49,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:14:49,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:14:49,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:14:49,820 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:14:49,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:14:49,820 INFO L82 PathProgramCache]: Analyzing trace with hash -514975054, now seen corresponding path program 1 times [2020-10-28 12:14:49,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:14:49,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734222740] [2020-10-28 12:14:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:14:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:51,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 12:14:51,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:14:51,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-28 12:14:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:51,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:14:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:14:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:14:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:14:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:51,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:51,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:14:51,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:14:51,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:51,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:14:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:51,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:14:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:14:51,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:14:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:52,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:52,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:52,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:14:52,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:14:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:14:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:52,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:14:52,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:14:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:14:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:14:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:14:52,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:14:52,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:14:52,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:14:52,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 12:14:52,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:14:52,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:14:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:14:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:14:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:14:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:14:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 12:14:52,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734222740] [2020-10-28 12:14:52,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:14:52,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:14:52,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965358159] [2020-10-28 12:14:52,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:14:52,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:14:52,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:14:52,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:14:52,598 INFO L87 Difference]: Start difference. First operand 40510 states and 51450 transitions. Second operand 5 states. [2020-10-28 12:15:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:10,129 INFO L93 Difference]: Finished difference Result 98151 states and 128672 transitions. [2020-10-28 12:15:10,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:15:10,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-28 12:15:10,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:10,370 INFO L225 Difference]: With dead ends: 98151 [2020-10-28 12:15:10,370 INFO L226 Difference]: Without dead ends: 57624 [2020-10-28 12:15:10,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:15:10,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57624 states. [2020-10-28 12:15:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57624 to 56846. [2020-10-28 12:15:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56846 states. [2020-10-28 12:15:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56846 states to 56846 states and 74841 transitions. [2020-10-28 12:15:12,733 INFO L78 Accepts]: Start accepts. Automaton has 56846 states and 74841 transitions. Word has length 257 [2020-10-28 12:15:12,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:12,734 INFO L481 AbstractCegarLoop]: Abstraction has 56846 states and 74841 transitions. [2020-10-28 12:15:12,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:15:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 56846 states and 74841 transitions. [2020-10-28 12:15:12,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 12:15:12,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:12,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:15:12,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:15:12,742 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:12,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1591030264, now seen corresponding path program 1 times [2020-10-28 12:15:12,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:12,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833651728] [2020-10-28 12:15:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 12:15:13,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-28 12:15:13,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 12:15:13,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 12:15:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:13,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:15:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:15:13,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:15:13,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:13,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:15:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:15:13,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:15:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:13,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:13,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:15:13,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:15:14,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833651728] [2020-10-28 12:15:14,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:14,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:15:14,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603698182] [2020-10-28 12:15:14,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:15:14,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:14,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:15:14,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:15:14,085 INFO L87 Difference]: Start difference. First operand 56846 states and 74841 transitions. Second operand 6 states. [2020-10-28 12:15:40,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:15:40,709 INFO L93 Difference]: Finished difference Result 138602 states and 186745 transitions. [2020-10-28 12:15:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:15:40,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-28 12:15:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:15:41,075 INFO L225 Difference]: With dead ends: 138602 [2020-10-28 12:15:41,075 INFO L226 Difference]: Without dead ends: 81752 [2020-10-28 12:15:41,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:15:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81752 states. [2020-10-28 12:15:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81752 to 79420. [2020-10-28 12:15:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79420 states. [2020-10-28 12:15:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79420 states to 79420 states and 106100 transitions. [2020-10-28 12:15:44,681 INFO L78 Accepts]: Start accepts. Automaton has 79420 states and 106100 transitions. Word has length 270 [2020-10-28 12:15:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:15:44,682 INFO L481 AbstractCegarLoop]: Abstraction has 79420 states and 106100 transitions. [2020-10-28 12:15:44,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:15:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 79420 states and 106100 transitions. [2020-10-28 12:15:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-28 12:15:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:15:44,721 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:15:44,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:15:44,722 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:15:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:15:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash 481233940, now seen corresponding path program 1 times [2020-10-28 12:15:44,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:15:44,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872811382] [2020-10-28 12:15:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:15:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:49,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:49,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-28 12:15:49,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:15:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 12:15:49,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:49,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 331 [2020-10-28 12:15:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:15:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:15:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:50,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:15:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:15:50,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:50,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:50,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:50,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:50,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:15:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:50,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:50,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:50,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:15:50,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:15:50,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:50,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:50,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:50,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:15:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:50,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:15:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:15:50,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:50,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:15:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:15:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 12:15:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:50,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:50,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:50,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:15:50,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:15:50,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:50,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:15:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:15:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:15:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:15:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-28 12:15:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:15:50,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:15:50,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:15:50,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:15:50,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:15:50,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:15:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-28 12:15:51,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872811382] [2020-10-28 12:15:51,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:15:51,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:15:51,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566899717] [2020-10-28 12:15:51,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:15:51,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:15:51,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:15:51,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:15:51,130 INFO L87 Difference]: Start difference. First operand 79420 states and 106100 transitions. Second operand 7 states. [2020-10-28 12:16:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:16:19,134 INFO L93 Difference]: Finished difference Result 191593 states and 263303 transitions. [2020-10-28 12:16:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:16:19,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 480 [2020-10-28 12:16:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:16:19,851 INFO L225 Difference]: With dead ends: 191593 [2020-10-28 12:16:19,852 INFO L226 Difference]: Without dead ends: 109850 [2020-10-28 12:16:19,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:16:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109850 states.