/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/Problem04_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:28:25,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:28:25,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:28:25,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:28:25,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:28:25,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:28:25,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:28:25,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:28:25,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:28:25,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:28:25,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:28:25,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:28:25,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:28:25,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:28:25,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:28:25,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:28:25,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:28:25,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:28:25,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:28:25,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:28:25,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:28:25,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:28:25,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:28:25,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:28:25,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:28:25,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:28:25,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:28:25,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:28:25,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:28:25,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:28:25,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:28:25,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:28:25,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:28:25,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:28:25,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:28:25,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:28:25,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:28:25,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:28:25,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:28:25,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:28:25,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:28:25,682 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 10:28:25,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:28:25,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:28:25,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:28:25,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:28:25,712 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:28:25,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:28:25,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:28:25,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:28:25,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:28:25,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:28:25,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:28:25,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:28:25,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:28:25,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:28:25,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:28:25,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:28:25,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:28:25,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:28:25,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:28:25,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:28:25,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:28:25,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:28:25,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:28:25,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:28:25,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:28:25,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:28:25,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:28:25,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:28:25,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:28:25,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:28:26,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:28:26,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:28:26,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:28:26,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:28:26,137 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:28:26,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22.c [2020-10-28 10:28:26,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b60548373/803f436672094f10ae3f9d83a1ee1293/FLAG5a7051f98 [2020-10-28 10:28:27,237 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:28:27,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label22.c [2020-10-28 10:28:27,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b60548373/803f436672094f10ae3f9d83a1ee1293/FLAG5a7051f98 [2020-10-28 10:28:27,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b60548373/803f436672094f10ae3f9d83a1ee1293 [2020-10-28 10:28:27,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:28:27,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:28:27,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:28:27,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:28:27,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:28:27,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:28:27" (1/1) ... [2020-10-28 10:28:27,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b7c9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:27, skipping insertion in model container [2020-10-28 10:28:27,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:28:27" (1/1) ... [2020-10-28 10:28:27,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:28:27,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:28:29,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:28:29,432 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:28:30,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:28:30,382 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:28:30,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30 WrapperNode [2020-10-28 10:28:30,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:28:30,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:28:30,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:28:30,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:28:30,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (1/1) ... [2020-10-28 10:28:30,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:28:30,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:28:30,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:28:30,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:28:30,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (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 10:28:30,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:28:30,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:28:30,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:28:30,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:28:30,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:28:30,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:28:30,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:28:30,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:28:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:28:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:28:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:28:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:28:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:28:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:28:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:28:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:28:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:28:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:28:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:28:35,864 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:28:35,865 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:28:35,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:28:35 BoogieIcfgContainer [2020-10-28 10:28:35,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:28:35,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:28:35,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:28:35,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:28:35,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:28:27" (1/3) ... [2020-10-28 10:28:35,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325eed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:28:35, skipping insertion in model container [2020-10-28 10:28:35,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:28:30" (2/3) ... [2020-10-28 10:28:35,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325eed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:28:35, skipping insertion in model container [2020-10-28 10:28:35,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:28:35" (3/3) ... [2020-10-28 10:28:35,880 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label22.c [2020-10-28 10:28:35,892 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:28:35,898 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:28:35,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:28:35,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:28:35,945 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:28:35,945 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:28:35,945 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:28:35,945 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:28:35,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:28:35,946 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:28:35,946 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:28:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:28:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2020-10-28 10:28:36,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:36,036 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] [2020-10-28 10:28:36,037 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:36,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:36,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1396574908, now seen corresponding path program 1 times [2020-10-28 10:28:36,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:36,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996810339] [2020-10-28 10:28:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:41,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:41,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 842 [2020-10-28 10:28:41,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:28:41,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-28 10:28:42,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:42,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:28:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:28:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 833 [2020-10-28 10:28:42,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:28:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:43,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:28:43,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:43,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:28:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:28:44,183 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 10:28:44,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996810339] [2020-10-28 10:28:44,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:28:44,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:28:44,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177477210] [2020-10-28 10:28:44,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:28:44,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:28:44,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:28:44,211 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-28 10:28:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:54,619 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-28 10:28:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:28:54,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 826 [2020-10-28 10:28:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:54,663 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:28:54,664 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:28:54,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:28:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:28:54,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-28 10:28:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-28 10:28:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-28 10:28:54,878 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 826 [2020-10-28 10:28:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:54,881 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-28 10:28:54,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:28:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-28 10:28:54,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-28 10:28:54,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:54,917 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:28:54,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:28:54,918 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:54,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash 679610398, now seen corresponding path program 1 times [2020-10-28 10:28:54,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:54,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100607490] [2020-10-28 10:28:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:55,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:00,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-28 10:29:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:29:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-28 10:29:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:29:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:29:00,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:29:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:00,602 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:29:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:29:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:00,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:00,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:29:00,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:29:00,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:00,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:29:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:29:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:00,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:29:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:00,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:00,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:29:00,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:29:00,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:00,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:29:00,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:29:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:29:01,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100607490] [2020-10-28 10:29:01,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:29:01,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:29:01,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180070685] [2020-10-28 10:29:01,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:29:01,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:29:01,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:29:01,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:29:01,325 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 8 states. [2020-10-28 10:29:01,468 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:29:08,987 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 10:29:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:29:15,507 INFO L93 Difference]: Finished difference Result 5185 states and 9307 transitions. [2020-10-28 10:29:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:29:15,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 834 [2020-10-28 10:29:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:29:15,530 INFO L225 Difference]: With dead ends: 5185 [2020-10-28 10:29:15,530 INFO L226 Difference]: Without dead ends: 3501 [2020-10-28 10:29:15,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:29:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-10-28 10:29:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 3457. [2020-10-28 10:29:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3457 states. [2020-10-28 10:29:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 5380 transitions. [2020-10-28 10:29:15,655 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 5380 transitions. Word has length 834 [2020-10-28 10:29:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:29:15,656 INFO L481 AbstractCegarLoop]: Abstraction has 3457 states and 5380 transitions. [2020-10-28 10:29:15,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:29:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 5380 transitions. [2020-10-28 10:29:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-28 10:29:15,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:29:15,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-28 10:29:15,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:29:15,674 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:29:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:29:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1401938133, now seen corresponding path program 1 times [2020-10-28 10:29:15,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:29:15,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975588287] [2020-10-28 10:29:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:29:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:15,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:20,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:20,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 875 [2020-10-28 10:29:20,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:29:20,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5184 [2020-10-28 10:29:20,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:20,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:29:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:29:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:21,173 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:29:21,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:29:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:21,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:21,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:29:21,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:21,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:29:21,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:21,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:21,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:21,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:29:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:29:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:29:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:21,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:29:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:29:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:29:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:21,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:29:21,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 10:29:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:21,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:29:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:29:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:29:21,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975588287] [2020-10-28 10:29:21,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:29:21,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:29:21,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580506132] [2020-10-28 10:29:21,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:29:21,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:29:21,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:29:21,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:29:21,756 INFO L87 Difference]: Start difference. First operand 3457 states and 5380 transitions. Second operand 7 states. [2020-10-28 10:29:22,010 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:29:24,511 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:29:37,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:29:37,414 INFO L93 Difference]: Finished difference Result 10623 states and 17214 transitions. [2020-10-28 10:29:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:29:37,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 855 [2020-10-28 10:29:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:29:37,465 INFO L225 Difference]: With dead ends: 10623 [2020-10-28 10:29:37,465 INFO L226 Difference]: Without dead ends: 7172 [2020-10-28 10:29:37,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:29:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2020-10-28 10:29:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 7016. [2020-10-28 10:29:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2020-10-28 10:29:37,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10559 transitions. [2020-10-28 10:29:37,763 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10559 transitions. Word has length 855 [2020-10-28 10:29:37,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:29:37,764 INFO L481 AbstractCegarLoop]: Abstraction has 7016 states and 10559 transitions. [2020-10-28 10:29:37,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:29:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10559 transitions. [2020-10-28 10:29:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-28 10:29:37,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:29:37,796 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:37,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:29:37,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:29:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:29:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash -329926924, now seen corresponding path program 1 times [2020-10-28 10:29:37,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:29:37,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495477737] [2020-10-28 10:29:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:29:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:42,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 884 [2020-10-28 10:29:42,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:29:42,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 10:29:42,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:42,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 10:29:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:29:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:29:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:43,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:29:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:29:43,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:43,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:29:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:43,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:43,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:29:43,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:43,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:29:43,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:43,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:29:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 10:29:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 10:29:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:29:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 10:29:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:43,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:29:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:29:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:29:43,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495477737] [2020-10-28 10:29:43,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:29:43,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:29:43,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903538902] [2020-10-28 10:29:43,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:29:43,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:29:43,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:29:43,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:29:43,753 INFO L87 Difference]: Start difference. First operand 7016 states and 10559 transitions. Second operand 7 states. [2020-10-28 10:29:52,197 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:29:59,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:29:59,714 INFO L93 Difference]: Finished difference Result 21314 states and 34461 transitions. [2020-10-28 10:29:59,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:29:59,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 864 [2020-10-28 10:29:59,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:29:59,799 INFO L225 Difference]: With dead ends: 21314 [2020-10-28 10:29:59,799 INFO L226 Difference]: Without dead ends: 14304 [2020-10-28 10:29:59,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:29:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14304 states. [2020-10-28 10:30:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14304 to 14097. [2020-10-28 10:30:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14097 states. [2020-10-28 10:30:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14097 states to 14097 states and 19937 transitions. [2020-10-28 10:30:00,321 INFO L78 Accepts]: Start accepts. Automaton has 14097 states and 19937 transitions. Word has length 864 [2020-10-28 10:30:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:30:00,322 INFO L481 AbstractCegarLoop]: Abstraction has 14097 states and 19937 transitions. [2020-10-28 10:30:00,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:30:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 14097 states and 19937 transitions. [2020-10-28 10:30:00,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-28 10:30:00,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:30:00,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 10:30:00,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:30:00,372 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:30:00,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:30:00,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1280971921, now seen corresponding path program 1 times [2020-10-28 10:30:00,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:30:00,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007088578] [2020-10-28 10:30:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:30:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:00,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 889 [2020-10-28 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:06,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:30:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:06,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:06,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:30:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:30:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:30:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:30:06,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:30:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:06,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:06,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:30:06,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:06,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 10:30:06,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:06,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:30:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 10:30:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:06,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 10:30:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:06,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:06,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:30:06,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:30:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:06,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:30:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:30:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:30:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:30:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:30:06,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007088578] [2020-10-28 10:30:06,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:30:06,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:30:06,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136645898] [2020-10-28 10:30:06,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:30:06,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:30:06,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:30:06,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:30:06,941 INFO L87 Difference]: Start difference. First operand 14097 states and 19937 transitions. Second operand 7 states. [2020-10-28 10:30:07,122 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:30:09,049 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:30:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:30:19,273 INFO L93 Difference]: Finished difference Result 35263 states and 52702 transitions. [2020-10-28 10:30:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:30:19,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 869 [2020-10-28 10:30:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:30:19,356 INFO L225 Difference]: With dead ends: 35263 [2020-10-28 10:30:19,356 INFO L226 Difference]: Without dead ends: 21172 [2020-10-28 10:30:19,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:30:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21172 states. [2020-10-28 10:30:20,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21172 to 21119. [2020-10-28 10:30:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21119 states. [2020-10-28 10:30:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21119 states to 21119 states and 29851 transitions. [2020-10-28 10:30:20,072 INFO L78 Accepts]: Start accepts. Automaton has 21119 states and 29851 transitions. Word has length 869 [2020-10-28 10:30:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:30:20,072 INFO L481 AbstractCegarLoop]: Abstraction has 21119 states and 29851 transitions. [2020-10-28 10:30:20,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:30:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 21119 states and 29851 transitions. [2020-10-28 10:30:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2020-10-28 10:30:20,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:30:20,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:20,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:30:20,148 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:30:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:30:20,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1426928277, now seen corresponding path program 1 times [2020-10-28 10:30:20,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:30:20,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556437031] [2020-10-28 10:30:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:30:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:25,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-28 10:30:25,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:30:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-28 10:30:25,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:25,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:30:25,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 10:30:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:30:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:25,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:25,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:25,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:30:25,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:30:25,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:25,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:30:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:25,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:30:25,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:25,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:30:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:25,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:25,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:25,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:30:25,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:25,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:30:25,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:25,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:25,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:30:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:25,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:30:25,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:30:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:30:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:25,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:25,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:30:25,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:25,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:30:25,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:25,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:25,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:30:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 10:30:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:30:26,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556437031] [2020-10-28 10:30:26,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:30:26,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:30:26,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808041548] [2020-10-28 10:30:26,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:30:26,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:30:26,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:30:26,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:30:26,111 INFO L87 Difference]: Start difference. First operand 21119 states and 29851 transitions. Second operand 7 states. [2020-10-28 10:30:26,607 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:30:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:30:46,887 INFO L93 Difference]: Finished difference Result 66984 states and 99532 transitions. [2020-10-28 10:30:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:30:46,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 873 [2020-10-28 10:30:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:30:47,095 INFO L225 Difference]: With dead ends: 66984 [2020-10-28 10:30:47,096 INFO L226 Difference]: Without dead ends: 45871 [2020-10-28 10:30:47,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:30:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45871 states. [2020-10-28 10:30:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45871 to 45778. [2020-10-28 10:30:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45778 states. [2020-10-28 10:30:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45778 states to 45778 states and 66850 transitions. [2020-10-28 10:30:48,475 INFO L78 Accepts]: Start accepts. Automaton has 45778 states and 66850 transitions. Word has length 873 [2020-10-28 10:30:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:30:48,476 INFO L481 AbstractCegarLoop]: Abstraction has 45778 states and 66850 transitions. [2020-10-28 10:30:48,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:30:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 45778 states and 66850 transitions. [2020-10-28 10:30:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2020-10-28 10:30:48,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:30:48,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:48,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:30:48,644 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:30:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:30:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash 722750327, now seen corresponding path program 1 times [2020-10-28 10:30:48,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:30:48,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832370881] [2020-10-28 10:30:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:30:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:53,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:53,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-10-28 10:30:53,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 10:30:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:30:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:54,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:30:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:54,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:30:54,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:54,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:30:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:30:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:30:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:54,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:54,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:30:54,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:54,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 10:30:54,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:54,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:30:54,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 10:30:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:54,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:30:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:30:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:30:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:54,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:30:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:30:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:30:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:30:54,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832370881] [2020-10-28 10:30:54,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:30:54,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:30:54,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000763940] [2020-10-28 10:30:54,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:30:54,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:30:54,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:30:54,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:30:54,645 INFO L87 Difference]: Start difference. First operand 45778 states and 66850 transitions. Second operand 7 states. [2020-10-28 10:30:54,780 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:30:58,250 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:31:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:09,768 INFO L93 Difference]: Finished difference Result 131765 states and 202162 transitions. [2020-10-28 10:31:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:31:09,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 895 [2020-10-28 10:31:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:10,215 INFO L225 Difference]: With dead ends: 131765 [2020-10-28 10:31:10,216 INFO L226 Difference]: Without dead ends: 85997 [2020-10-28 10:31:10,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:31:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85997 states. [2020-10-28 10:31:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85997 to 85757. [2020-10-28 10:31:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85757 states. [2020-10-28 10:31:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85757 states to 85757 states and 116501 transitions. [2020-10-28 10:31:14,250 INFO L78 Accepts]: Start accepts. Automaton has 85757 states and 116501 transitions. Word has length 895 [2020-10-28 10:31:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:14,251 INFO L481 AbstractCegarLoop]: Abstraction has 85757 states and 116501 transitions. [2020-10-28 10:31:14,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:31:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 85757 states and 116501 transitions. [2020-10-28 10:31:14,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-28 10:31:14,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:14,513 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:14,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:31:14,513 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1355357740, now seen corresponding path program 1 times [2020-10-28 10:31:14,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:14,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582950703] [2020-10-28 10:31:14,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:15,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:19,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-28 10:31:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:31:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-28 10:31:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:19,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:31:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:31:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 10:31:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:20,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:20,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:20,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:20,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:20,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:31:20,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:20,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:20,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:20,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:20,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:31:20,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:31:20,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:20,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:31:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:31:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-28 10:31:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 10:31:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 10:31:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:20,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:31:20,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:20,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:31:20,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:20,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:20,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:31:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 10:31:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:20,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:20,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:31:20,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:20,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:31:20,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:20,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:31:20,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:20,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 215 proven. 41 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-28 10:31:21,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582950703] [2020-10-28 10:31:21,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:21,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:31:21,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305430842] [2020-10-28 10:31:21,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:31:21,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:21,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:31:21,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:31:21,655 INFO L87 Difference]: Start difference. First operand 85757 states and 116501 transitions. Second operand 8 states. [2020-10-28 10:31:21,810 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:31:26,374 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:31:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:37,288 INFO L93 Difference]: Finished difference Result 217357 states and 307497 transitions. [2020-10-28 10:31:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:31:37,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1002 [2020-10-28 10:31:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:37,944 INFO L225 Difference]: With dead ends: 217357 [2020-10-28 10:31:37,944 INFO L226 Difference]: Without dead ends: 132440 [2020-10-28 10:31:38,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:31:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132440 states. [2020-10-28 10:31:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132440 to 122091. [2020-10-28 10:31:41,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122091 states. [2020-10-28 10:31:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122091 states to 122091 states and 161218 transitions. [2020-10-28 10:31:41,962 INFO L78 Accepts]: Start accepts. Automaton has 122091 states and 161218 transitions. Word has length 1002 [2020-10-28 10:31:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:41,968 INFO L481 AbstractCegarLoop]: Abstraction has 122091 states and 161218 transitions. [2020-10-28 10:31:41,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:31:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 122091 states and 161218 transitions. [2020-10-28 10:31:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2020-10-28 10:31:42,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:42,605 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:31:42,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:31:42,606 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:42,607 INFO L82 PathProgramCache]: Analyzing trace with hash -349861963, now seen corresponding path program 1 times [2020-10-28 10:31:42,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:42,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307676107] [2020-10-28 10:31:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:47,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1195 [2020-10-28 10:31:47,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:31:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-28 10:31:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:47,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:31:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:31:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 10:31:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:48,148 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:31:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:48,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:48,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:48,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:31:48,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:48,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:48,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:31:48,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:48,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 10:31:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 10:31:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 10:31:48,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-28 10:31:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:48,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:48,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 10:31:48,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-10-28 10:31:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:48,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:31:48,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:48,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-28 10:31:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:48,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:48,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:31:48,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:31:48,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:48,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 328 proven. 198 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-28 10:31:49,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307676107] [2020-10-28 10:31:49,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:49,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:31:49,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464531452] [2020-10-28 10:31:49,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:31:49,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:31:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:31:49,484 INFO L87 Difference]: Start difference. First operand 122091 states and 161218 transitions. Second operand 7 states. [2020-10-28 10:31:49,631 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95