/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=DEEPEST --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/Problem06_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:30:38,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:30:38,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:30:38,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:30:38,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:30:38,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:30:38,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:30:38,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:30:38,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:30:38,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:30:38,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:30:38,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:30:38,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:30:38,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:30:38,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:30:38,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:30:38,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:30:38,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:30:38,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:30:38,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:30:38,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:30:38,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:30:38,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:30:38,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:30:38,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:30:38,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:30:38,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:30:38,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:30:38,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:30:38,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:30:38,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:30:38,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:30:38,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:30:38,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:30:38,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:30:38,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:30:38,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:30:38,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:30:38,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:30:38,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:30:38,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:30:38,577 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 [2020-10-27 16:30:38,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:30:38,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:30:38,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:30:38,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:30:38,625 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:30:38,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:30:38,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:30:38,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:30:38,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:30:38,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:30:38,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:30:38,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:30:38,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:30:38,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:30:38,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:30:38,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:30:38,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:30:38,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:30:38,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:30:38,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:30:38,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:30:38,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:30:38,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:30:38,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:30:38,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:30:38,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:30:38,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:30:38,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:30:38,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:30:38,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:30:39,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:30:39,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:30:39,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:30:39,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:30:39,152 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:30:39,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-27 16:30:39,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/852b2b500/b87ca7f23c19403f9f3a3410d57bb0f9/FLAG635a51c65 [2020-10-27 16:30:40,553 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:30:40,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label31.c [2020-10-27 16:30:40,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/852b2b500/b87ca7f23c19403f9f3a3410d57bb0f9/FLAG635a51c65 [2020-10-27 16:30:40,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/852b2b500/b87ca7f23c19403f9f3a3410d57bb0f9 [2020-10-27 16:30:40,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:30:40,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:30:40,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:30:40,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:30:40,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:30:40,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:30:40" (1/1) ... [2020-10-27 16:30:40,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b38e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:40, skipping insertion in model container [2020-10-27 16:30:40,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:30:40" (1/1) ... [2020-10-27 16:30:40,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:30:41,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:30:43,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:30:43,112 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:30:44,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:30:44,365 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:30:44,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44 WrapperNode [2020-10-27 16:30:44,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:30:44,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:30:44,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:30:44,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:30:44,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (1/1) ... [2020-10-27 16:30:44,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:30:44,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:30:44,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:30:44,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:30:44,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (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 [2020-10-27 16:30:45,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:30:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:30:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:30:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:30:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:30:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:30:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:30:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:30:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:30:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:30:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:30:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:30:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:30:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:30:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:30:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:30:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:30:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:30:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:30:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:30:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:30:53,768 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:30:53,769 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:30:53,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:30:53 BoogieIcfgContainer [2020-10-27 16:30:53,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:30:53,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:30:53,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:30:53,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:30:53,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:30:40" (1/3) ... [2020-10-27 16:30:53,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8029718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:30:53, skipping insertion in model container [2020-10-27 16:30:53,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:30:44" (2/3) ... [2020-10-27 16:30:53,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8029718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:30:53, skipping insertion in model container [2020-10-27 16:30:53,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:30:53" (3/3) ... [2020-10-27 16:30:53,784 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label31.c [2020-10-27 16:30:53,797 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:30:53,804 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:30:53,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:30:53,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:30:53,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:30:53,855 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:30:53,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:30:53,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:30:53,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:30:53,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:30:53,856 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:30:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:30:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2020-10-27 16:30:53,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:30:53,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:30:53,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:30:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:30:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1450477560, now seen corresponding path program 1 times [2020-10-27 16:30:54,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:30:54,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163579215] [2020-10-27 16:30:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:30:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:30:55,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:30:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:00,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:00,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-27 16:31:00,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:31:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 16:31:00,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:31:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:31:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:31:00,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:31:05,968 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-27 16:31:06,151 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 16:31:06,335 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 16:31:06,534 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-27 16:31:06,816 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-27 16:31:07,079 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 59 [2020-10-27 16:31:07,329 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-27 16:31:07,598 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-27 16:31:07,855 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-27 16:31:08,088 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-27 16:31:08,324 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-27 16:31:08,517 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2020-10-27 16:31:08,726 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-27 16:31:08,956 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2020-10-27 16:31:09,156 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-10-27 16:31:09,446 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:31:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:31:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:31:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:31:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:31:09,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:31:09,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:31:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 16:31:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:31:09,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:31:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:31:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:31:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:31:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:31:22,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163579215] [2020-10-27 16:31:22,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:31:22,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:31:22,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983606122] [2020-10-27 16:31:22,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:31:22,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:31:22,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:31:22,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:31:22,791 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:31:23,380 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:31:24,430 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2020-10-27 16:31:25,410 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 196 [2020-10-27 16:31:26,495 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 204 [2020-10-27 16:31:31,284 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 203 [2020-10-27 16:31:35,393 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 214 DAG size of output: 202 [2020-10-27 16:31:38,407 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 193 [2020-10-27 16:31:39,413 WARN L193 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 199 [2020-10-27 16:31:41,218 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 217 DAG size of output: 198 [2020-10-27 16:31:52,779 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 191 [2020-10-27 16:31:53,796 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 196 [2020-10-27 16:31:57,788 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 210 DAG size of output: 195 [2020-10-27 16:32:06,403 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-10-27 16:32:07,460 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 202 [2020-10-27 16:32:10,529 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 198 [2020-10-27 16:32:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:25,678 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:32:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:32:25,684 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1004 [2020-10-27 16:32:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:25,746 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:32:25,749 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:32:25,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:32:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:32:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:32:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:32:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:32:25,960 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 1004 [2020-10-27 16:32:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:25,964 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:32:25,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:32:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:32:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2020-10-27 16:32:26,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:26,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:32:26,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:32:26,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:26,022 INFO L82 PathProgramCache]: Analyzing trace with hash 367252033, now seen corresponding path program 1 times [2020-10-27 16:32:26,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:26,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813651335] [2020-10-27 16:32:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:32:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:31,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:31,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1094 [2020-10-27 16:32:31,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:32:31,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 16:32:31,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:32:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:32:31,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 16:32:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:31,774 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:32:31,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:32:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:31,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:31,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:32:31,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 16:32:31,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:32:31,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:32:31,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:32:31,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:31,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:32:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:32:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:32:32,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:32:32,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:32:32,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:32:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-27 16:32:32,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:32:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:32:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:32:32,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 16:32:32,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:32:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:32:33,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813651335] [2020-10-27 16:32:33,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:32:33,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 16:32:33,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872498250] [2020-10-27 16:32:33,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:32:33,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:32:33,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:32:33,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:32:33,831 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 7 states. [2020-10-27 16:32:34,120 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 16:32:35,537 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-27 16:32:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:32:59,648 INFO L93 Difference]: Finished difference Result 4476 states and 7509 transitions. [2020-10-27 16:32:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 16:32:59,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1074 [2020-10-27 16:32:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:32:59,668 INFO L225 Difference]: With dead ends: 4476 [2020-10-27 16:32:59,668 INFO L226 Difference]: Without dead ends: 3216 [2020-10-27 16:32:59,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:32:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2020-10-27 16:32:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3141. [2020-10-27 16:32:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3141 states. [2020-10-27 16:32:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4648 transitions. [2020-10-27 16:32:59,770 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4648 transitions. Word has length 1074 [2020-10-27 16:32:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:32:59,771 INFO L481 AbstractCegarLoop]: Abstraction has 3141 states and 4648 transitions. [2020-10-27 16:32:59,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:32:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4648 transitions. [2020-10-27 16:32:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2020-10-27 16:32:59,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:32:59,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:32:59,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:32:59,790 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:32:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:32:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1805309500, now seen corresponding path program 1 times [2020-10-27 16:32:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:32:59,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521089435] [2020-10-27 16:32:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:33:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:05,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:05,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1146 [2020-10-27 16:33:05,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:33:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-27 16:33:05,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:33:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 16:33:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-27 16:33:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:06,825 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:33:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:33:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:06,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:06,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:33:06,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:06,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:33:06,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:33:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:06,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:33:06,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:06,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:33:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:07,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 16:33:07,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 16:33:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:33:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 16:33:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 118 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:33:08,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521089435] [2020-10-27 16:33:08,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:33:08,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:33:08,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084874555] [2020-10-27 16:33:08,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:33:08,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:08,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:33:08,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:33:08,717 INFO L87 Difference]: Start difference. First operand 3141 states and 4648 transitions. Second operand 5 states. [2020-10-27 16:33:08,974 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:33:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:33:27,622 INFO L93 Difference]: Finished difference Result 7704 states and 12157 transitions. [2020-10-27 16:33:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:33:27,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1126 [2020-10-27 16:33:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:33:27,652 INFO L225 Difference]: With dead ends: 7704 [2020-10-27 16:33:27,652 INFO L226 Difference]: Without dead ends: 5323 [2020-10-27 16:33:27,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:33:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-27 16:33:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5309. [2020-10-27 16:33:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5309 states. [2020-10-27 16:33:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 7706 transitions. [2020-10-27 16:33:27,813 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 7706 transitions. Word has length 1126 [2020-10-27 16:33:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:33:27,816 INFO L481 AbstractCegarLoop]: Abstraction has 5309 states and 7706 transitions. [2020-10-27 16:33:27,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:33:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 7706 transitions. [2020-10-27 16:33:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-27 16:33:27,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:33:27,844 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:33:27,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:33:27,844 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:33:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:33:27,845 INFO L82 PathProgramCache]: Analyzing trace with hash -346876931, now seen corresponding path program 1 times [2020-10-27 16:33:27,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:33:27,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010203425] [2020-10-27 16:33:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:33:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:28,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:31,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1160 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-27 16:33:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:34,091 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:33:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:33:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:34,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:34,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:33:34,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:34,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:33:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:34,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:33:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:34,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 16:33:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:34,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:33:34,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 16:33:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:33:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 16:33:35,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010203425] [2020-10-27 16:33:35,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:33:35,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:33:35,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372752429] [2020-10-27 16:33:35,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:33:35,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:33:35,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:33:35,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:33:35,669 INFO L87 Difference]: Start difference. First operand 5309 states and 7706 transitions. Second operand 5 states. [2020-10-27 16:33:36,610 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:33:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:33:57,089 INFO L93 Difference]: Finished difference Result 14107 states and 21419 transitions. [2020-10-27 16:33:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:33:57,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1138 [2020-10-27 16:33:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:33:57,137 INFO L225 Difference]: With dead ends: 14107 [2020-10-27 16:33:57,137 INFO L226 Difference]: Without dead ends: 9558 [2020-10-27 16:33:57,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:33:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9558 states. [2020-10-27 16:33:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9558 to 9473. [2020-10-27 16:33:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9473 states. [2020-10-27 16:33:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 13162 transitions. [2020-10-27 16:33:57,405 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 13162 transitions. Word has length 1138 [2020-10-27 16:33:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:33:57,410 INFO L481 AbstractCegarLoop]: Abstraction has 9473 states and 13162 transitions. [2020-10-27 16:33:57,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:33:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 13162 transitions. [2020-10-27 16:33:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2020-10-27 16:33:57,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:33:57,450 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:33:57,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:33:57,450 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:33:57,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:33:57,451 INFO L82 PathProgramCache]: Analyzing trace with hash 910648826, now seen corresponding path program 1 times [2020-10-27 16:33:57,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:33:57,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993849673] [2020-10-27 16:33:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:33:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:33:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:33:57,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1163 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 16:34:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:03,210 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:34:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:34:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:03,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:34:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:03,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:34:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:03,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:34:03,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 16:34:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 16:34:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:34:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:34:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:34:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 16:34:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:34:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:34:04,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993849673] [2020-10-27 16:34:04,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:34:04,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:34:04,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685979113] [2020-10-27 16:34:04,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:34:04,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:34:04,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:34:04,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:34:04,782 INFO L87 Difference]: Start difference. First operand 9473 states and 13162 transitions. Second operand 7 states. [2020-10-27 16:34:05,059 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:34:06,692 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159