/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:58:55,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:58:55,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:58:55,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:58:55,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:58:55,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:58:55,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:58:55,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:58:55,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:58:55,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:58:55,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:58:55,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:58:55,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:58:55,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:58:55,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:58:55,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:58:55,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:58:55,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:58:55,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:58:55,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:58:55,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:58:55,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:58:55,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:58:55,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:58:55,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:58:55,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:58:55,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:58:55,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:58:55,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:58:55,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:58:55,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:58:55,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:58:55,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:58:55,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:58:55,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:58:55,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:58:55,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:58:55,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:58:55,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:58:55,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:58:55,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:58:55,651 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 [2020-10-26 22:58:55,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:58:55,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:58:55,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:58:55,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:58:55,682 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:58:55,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:58:55,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:58:55,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:58:55,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:58:55,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:58:55,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:58:55,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:58:55,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:58:55,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:58:55,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:58:55,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:58:55,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:58:55,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:58:55,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:58:55,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:58:55,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:58:55,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:58:55,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:58:55,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:58:55,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:58:55,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:58:55,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:58:55,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:58:55,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:58:55,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:58:56,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:58:56,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:58:56,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:58:56,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:58:56,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:58:56,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-26 22:58:56,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e11d6797/9968bffcf2f541b6a08dd6b89b79b962/FLAGee2c9e1af [2020-10-26 22:58:57,316 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:58:57,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c [2020-10-26 22:58:57,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e11d6797/9968bffcf2f541b6a08dd6b89b79b962/FLAGee2c9e1af [2020-10-26 22:58:57,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e11d6797/9968bffcf2f541b6a08dd6b89b79b962 [2020-10-26 22:58:57,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:58:57,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:58:57,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:58:57,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:58:57,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:58:57,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:57" (1/1) ... [2020-10-26 22:58:57,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9f3ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:57, skipping insertion in model container [2020-10-26 22:58:57,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:57" (1/1) ... [2020-10-26 22:58:57,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:58:57,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:58:59,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:58:59,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:59:00,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:59:00,132 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:59:00,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00 WrapperNode [2020-10-26 22:59:00,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:59:00,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:59:00,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:59:00,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:59:00,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (1/1) ... [2020-10-26 22:59:00,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:59:00,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:59:00,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:59:00,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:59:00,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (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 [2020-10-26 22:59:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:59:00,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:59:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:59:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:59:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:59:00,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:59:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:59:00,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:59:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:59:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:59:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:59:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:59:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:59:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:59:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:59:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:59:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:59:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:59:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:59:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:59:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:59:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:59:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:59:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:59:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:59:05,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:59:05,906 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:59:05,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:59:05 BoogieIcfgContainer [2020-10-26 22:59:05,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:59:05,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:59:05,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:59:05,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:59:05,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:58:57" (1/3) ... [2020-10-26 22:59:05,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1609afea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:59:05, skipping insertion in model container [2020-10-26 22:59:05,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:59:00" (2/3) ... [2020-10-26 22:59:05,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1609afea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:59:05, skipping insertion in model container [2020-10-26 22:59:05,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:59:05" (3/3) ... [2020-10-26 22:59:05,923 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label46.c [2020-10-26 22:59:05,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:59:05,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:59:05,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:59:05,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:59:05,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:59:05,995 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:59:05,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:59:05,995 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:59:05,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:59:05,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:59:05,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:59:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:59:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-26 22:59:06,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:06,050 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] [2020-10-26 22:59:06,050 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:06,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:06,065 INFO L82 PathProgramCache]: Analyzing trace with hash -88085652, now seen corresponding path program 1 times [2020-10-26 22:59:06,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:06,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099903015] [2020-10-26 22:59:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:06,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:06,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-26 22:59:06,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-26 22:59:06,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 22:59:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:59:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:07,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:07,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:07,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:07,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 22:59:07,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:07,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:07,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:07,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:07,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099903015] [2020-10-26 22:59:07,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:07,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:59:07,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787491356] [2020-10-26 22:59:07,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:59:07,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:07,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:59:07,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:59:07,314 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:59:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:18,752 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-26 22:59:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:59:18,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-26 22:59:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:18,789 INFO L225 Difference]: With dead ends: 2492 [2020-10-26 22:59:18,790 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:59:18,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:59:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:59:18,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-26 22:59:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-26 22:59:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-26 22:59:18,967 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 68 [2020-10-26 22:59:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:18,969 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-26 22:59:18,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:59:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-26 22:59:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-26 22:59:18,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:18,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:18,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:59:18,987 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1516880606, now seen corresponding path program 1 times [2020-10-26 22:59:18,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:18,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696201250] [2020-10-26 22:59:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:20,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:20,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 22:59:20,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:59:20,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-26 22:59:20,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:59:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:59:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:20,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:20,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:59:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:20,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 33 [2020-10-26 22:59:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:20,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:20,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 22:59:20,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:59:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:59:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:59:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:20,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696201250] [2020-10-26 22:59:20,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:20,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:20,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780068392] [2020-10-26 22:59:20,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:20,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:20,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:20,858 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-26 22:59:22,794 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 22:59:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:35,050 INFO L93 Difference]: Finished difference Result 4771 states and 7609 transitions. [2020-10-26 22:59:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:59:35,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-26 22:59:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:35,074 INFO L225 Difference]: With dead ends: 4771 [2020-10-26 22:59:35,074 INFO L226 Difference]: Without dead ends: 3212 [2020-10-26 22:59:35,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:59:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-26 22:59:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3164. [2020-10-26 22:59:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-26 22:59:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4587 transitions. [2020-10-26 22:59:35,212 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4587 transitions. Word has length 147 [2020-10-26 22:59:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:35,214 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4587 transitions. [2020-10-26 22:59:35,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4587 transitions. [2020-10-26 22:59:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-26 22:59:35,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:35,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:35,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:59:35,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1026369044, now seen corresponding path program 1 times [2020-10-26 22:59:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:35,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720336539] [2020-10-26 22:59:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:36,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:36,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-26 22:59:36,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:59:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-26 22:59:36,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:36,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:59:36,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:36,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:36,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:36,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:36,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:36,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:59:36,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:36,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:37,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:37,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 22:59:37,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-26 22:59:37,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 22:59:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:37,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720336539] [2020-10-26 22:59:37,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:37,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:37,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637880648] [2020-10-26 22:59:37,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:37,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:37,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:37,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:37,420 INFO L87 Difference]: Start difference. First operand 3164 states and 4587 transitions. Second operand 7 states. [2020-10-26 22:59:53,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:53,054 INFO L93 Difference]: Finished difference Result 9820 states and 14983 transitions. [2020-10-26 22:59:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:59:53,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-26 22:59:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:53,105 INFO L225 Difference]: With dead ends: 9820 [2020-10-26 22:59:53,105 INFO L226 Difference]: Without dead ends: 6662 [2020-10-26 22:59:53,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:59:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6662 states. [2020-10-26 22:59:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6662 to 6498. [2020-10-26 22:59:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6498 states. [2020-10-26 22:59:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 9121 transitions. [2020-10-26 22:59:53,394 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 9121 transitions. Word has length 176 [2020-10-26 22:59:53,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:53,395 INFO L481 AbstractCegarLoop]: Abstraction has 6498 states and 9121 transitions. [2020-10-26 22:59:53,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 9121 transitions. [2020-10-26 22:59:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-26 22:59:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:53,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:53,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:59:53,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash 305878652, now seen corresponding path program 1 times [2020-10-26 22:59:53,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:53,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813883178] [2020-10-26 22:59:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-26 22:59:54,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:59:54,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-26 22:59:54,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:54,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:59:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:54,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:54,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:59:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:55,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:55,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:55,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 22:59:55,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-26 22:59:55,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:59:55,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:55,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813883178] [2020-10-26 22:59:55,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:55,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:55,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218204007] [2020-10-26 22:59:55,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:55,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:55,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:55,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:55,441 INFO L87 Difference]: Start difference. First operand 6498 states and 9121 transitions. Second operand 7 states. [2020-10-26 23:00:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:09,589 INFO L93 Difference]: Finished difference Result 19777 states and 28562 transitions. [2020-10-26 23:00:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:00:09,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-10-26 23:00:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:09,670 INFO L225 Difference]: With dead ends: 19777 [2020-10-26 23:00:09,670 INFO L226 Difference]: Without dead ends: 13285 [2020-10-26 23:00:09,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:00:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13285 states. [2020-10-26 23:00:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13285 to 13122. [2020-10-26 23:00:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13122 states. [2020-10-26 23:00:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13122 states to 13122 states and 17041 transitions. [2020-10-26 23:00:10,057 INFO L78 Accepts]: Start accepts. Automaton has 13122 states and 17041 transitions. Word has length 188 [2020-10-26 23:00:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:10,058 INFO L481 AbstractCegarLoop]: Abstraction has 13122 states and 17041 transitions. [2020-10-26 23:00:10,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:10,058 INFO L276 IsEmpty]: Start isEmpty. Operand 13122 states and 17041 transitions. [2020-10-26 23:00:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-26 23:00:10,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:10,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:10,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:00:10,063 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash -93230498, now seen corresponding path program 1 times [2020-10-26 23:00:10,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:10,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561111329] [2020-10-26 23:00:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-26 23:00:11,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-10-26 23:00:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:00:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-26 23:00:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:11,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:11,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:11,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:11,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:00:11,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:11,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:11,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:11,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:11,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:11,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:00:11,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:11,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-26 23:00:11,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 23:00:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:00:12,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561111329] [2020-10-26 23:00:12,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:12,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:00:12,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728626423] [2020-10-26 23:00:12,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:00:12,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:12,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:00:12,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:00:12,160 INFO L87 Difference]: Start difference. First operand 13122 states and 17041 transitions. Second operand 6 states. [2020-10-26 23:00:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:26,836 INFO L93 Difference]: Finished difference Result 39348 states and 53523 transitions. [2020-10-26 23:00:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:00:26,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-26 23:00:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:26,936 INFO L225 Difference]: With dead ends: 39348 [2020-10-26 23:00:26,936 INFO L226 Difference]: Without dead ends: 26232 [2020-10-26 23:00:26,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:00:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26232 states. [2020-10-26 23:00:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26232 to 23776. [2020-10-26 23:00:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23776 states. [2020-10-26 23:00:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23776 states to 23776 states and 30574 transitions. [2020-10-26 23:00:27,624 INFO L78 Accepts]: Start accepts. Automaton has 23776 states and 30574 transitions. Word has length 213 [2020-10-26 23:00:27,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:27,625 INFO L481 AbstractCegarLoop]: Abstraction has 23776 states and 30574 transitions. [2020-10-26 23:00:27,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:00:27,625 INFO L276 IsEmpty]: Start isEmpty. Operand 23776 states and 30574 transitions. [2020-10-26 23:00:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-26 23:00:27,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:27,632 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:27,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:00:27,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:27,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:27,633 INFO L82 PathProgramCache]: Analyzing trace with hash 402839416, now seen corresponding path program 1 times [2020-10-26 23:00:27,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:27,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573038707] [2020-10-26 23:00:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:27,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:29,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 23:00:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:30,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:30,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:30,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:00:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:00:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:00:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:30,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:00:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-26 23:00:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 23:00:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:00:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:00:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:00:30,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:00:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:00:30,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573038707] [2020-10-26 23:00:30,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:30,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:00:30,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146225570] [2020-10-26 23:00:30,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:30,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:30,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:30,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:30,861 INFO L87 Difference]: Start difference. First operand 23776 states and 30574 transitions. Second operand 7 states. [2020-10-26 23:00:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:51,771 INFO L93 Difference]: Finished difference Result 61038 states and 84872 transitions. [2020-10-26 23:00:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:00:51,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-10-26 23:00:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:52,022 INFO L225 Difference]: With dead ends: 61038 [2020-10-26 23:00:52,022 INFO L226 Difference]: Without dead ends: 37268 [2020-10-26 23:00:52,075 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 [2020-10-26 23:00:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37268 states. [2020-10-26 23:00:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37268 to 36897. [2020-10-26 23:00:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36897 states. [2020-10-26 23:00:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36897 states to 36897 states and 49735 transitions. [2020-10-26 23:00:53,047 INFO L78 Accepts]: Start accepts. Automaton has 36897 states and 49735 transitions. Word has length 288 [2020-10-26 23:00:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:53,047 INFO L481 AbstractCegarLoop]: Abstraction has 36897 states and 49735 transitions. [2020-10-26 23:00:53,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:53,048 INFO L276 IsEmpty]: Start isEmpty. Operand 36897 states and 49735 transitions. [2020-10-26 23:00:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-26 23:00:53,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:53,055 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 23:00:53,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:00:53,056 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1368010524, now seen corresponding path program 1 times [2020-10-26 23:00:53,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:53,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820823128] [2020-10-26 23:00:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:53,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:55,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:55,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-26 23:00:55,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:00:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2653 [2020-10-26 23:00:55,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:55,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:55,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 23:00:55,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:00:55,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:55,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:55,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:55,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:55,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:55,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:00:55,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:00:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:00:55,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:55,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:56,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:56,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:00:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:00:56,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 23:00:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:00:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:56,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:56,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:00:56,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:00:56,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:56,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:00:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:00:56,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820823128] [2020-10-26 23:00:56,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:56,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:00:56,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456784216] [2020-10-26 23:00:56,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:56,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:56,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:56,550 INFO L87 Difference]: Start difference. First operand 36897 states and 49735 transitions. Second operand 7 states. [2020-10-26 23:01:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:17,744 INFO L93 Difference]: Finished difference Result 90102 states and 125122 transitions. [2020-10-26 23:01:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:01:17,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-26 23:01:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:17,969 INFO L225 Difference]: With dead ends: 90102 [2020-10-26 23:01:17,969 INFO L226 Difference]: Without dead ends: 54008 [2020-10-26 23:01:18,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:01:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54008 states. [2020-10-26 23:01:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54008 to 53916. [2020-10-26 23:01:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53916 states. [2020-10-26 23:01:20,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53916 states to 53916 states and 73221 transitions. [2020-10-26 23:01:20,124 INFO L78 Accepts]: Start accepts. Automaton has 53916 states and 73221 transitions. Word has length 302 [2020-10-26 23:01:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:20,125 INFO L481 AbstractCegarLoop]: Abstraction has 53916 states and 73221 transitions. [2020-10-26 23:01:20,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:01:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 53916 states and 73221 transitions. [2020-10-26 23:01:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-26 23:01:20,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:20,142 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:01:20,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:01:20,142 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1848212132, now seen corresponding path program 1 times [2020-10-26 23:01:20,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:20,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615852587] [2020-10-26 23:01:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:22,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:22,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-26 23:01:22,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:01:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-26 23:01:22,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:22,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:01:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:01:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:01:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:22,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:22,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:22,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:01:22,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:22,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:22,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:01:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:01:22,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:01:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:01:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:23,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:23,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:01:23,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:01:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:01:23,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:01:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 200 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:01:23,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615852587] [2020-10-26 23:01:23,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:23,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:01:23,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201781759] [2020-10-26 23:01:23,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:23,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:23,571 INFO L87 Difference]: Start difference. First operand 53916 states and 73221 transitions. Second operand 7 states. [2020-10-26 23:01:45,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:45,717 INFO L93 Difference]: Finished difference Result 107938 states and 147298 transitions. [2020-10-26 23:01:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:01:45,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-26 23:01:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:45,915 INFO L225 Difference]: With dead ends: 107938 [2020-10-26 23:01:45,916 INFO L226 Difference]: Without dead ends: 54032 [2020-10-26 23:01:46,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:01:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54032 states. [2020-10-26 23:01:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54032 to 53135. [2020-10-26 23:01:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53135 states. [2020-10-26 23:01:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53135 states to 53135 states and 69953 transitions. [2020-10-26 23:01:48,011 INFO L78 Accepts]: Start accepts. Automaton has 53135 states and 69953 transitions. Word has length 306 [2020-10-26 23:01:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:48,012 INFO L481 AbstractCegarLoop]: Abstraction has 53135 states and 69953 transitions. [2020-10-26 23:01:48,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:01:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 53135 states and 69953 transitions. [2020-10-26 23:01:48,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-26 23:01:48,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:48,020 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 23:01:48,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:01:48,020 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1804572514, now seen corresponding path program 1 times [2020-10-26 23:01:48,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:48,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650127808] [2020-10-26 23:01:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:50,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2131 [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:01:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-26 23:01:50,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:50,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:50,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:50,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:50,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:50,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:01:50,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:50,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:50,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:50,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:01:50,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:50,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 23:01:50,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:50,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:50,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:01:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:01:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:50,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:50,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-26 23:01:50,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 23:01:50,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:50,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 23:01:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:01:51,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650127808] [2020-10-26 23:01:51,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:51,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:01:51,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720473243] [2020-10-26 23:01:51,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:51,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:51,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:51,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:51,174 INFO L87 Difference]: Start difference. First operand 53135 states and 69953 transitions. Second operand 7 states. [2020-10-26 23:02:19,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:02:19,478 INFO L93 Difference]: Finished difference Result 124005 states and 173919 transitions. [2020-10-26 23:02:19,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:02:19,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-26 23:02:19,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:02:19,726 INFO L225 Difference]: With dead ends: 124005 [2020-10-26 23:02:19,726 INFO L226 Difference]: Without dead ends: 71673 [2020-10-26 23:02:20,042 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 [2020-10-26 23:02:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71673 states. [2020-10-26 23:02:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71673 to 71042. [2020-10-26 23:02:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71042 states. [2020-10-26 23:02:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71042 states to 71042 states and 92538 transitions. [2020-10-26 23:02:21,922 INFO L78 Accepts]: Start accepts. Automaton has 71042 states and 92538 transitions. Word has length 307 [2020-10-26 23:02:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:02:21,923 INFO L481 AbstractCegarLoop]: Abstraction has 71042 states and 92538 transitions. [2020-10-26 23:02:21,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:02:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 71042 states and 92538 transitions. [2020-10-26 23:02:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-26 23:02:21,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:02:21,929 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-26 23:02:21,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:02:21,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:02:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:02:21,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1938968234, now seen corresponding path program 1 times [2020-10-26 23:02:21,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:02:21,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173088351] [2020-10-26 23:02:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:02:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:25,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:25,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-26 23:02:25,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:02:25,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3890 [2020-10-26 23:02:25,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:02:25,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:02:25,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:02:25,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:26,104 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 23:02:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:02:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:26,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:26,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:02:26,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:02:26,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:02:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:02:26,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:02:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:02:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:26,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:26,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:26,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:02:26,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:26,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-26 23:02:26,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:02:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:02:26,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:02:26,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:26,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 23:02:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:02:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:02:26,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:02:26,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:02:26,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:02:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:02:26,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:02:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:02:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-26 23:02:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:02:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:02:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 120 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:02:26,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173088351] [2020-10-26 23:02:26,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:02:26,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:02:26,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280972670] [2020-10-26 23:02:26,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:02:26,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:02:26,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:02:26,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:02:26,997 INFO L87 Difference]: Start difference. First operand 71042 states and 92538 transitions. Second operand 7 states. [2020-10-26 23:02:27,139 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 23:02:30,633 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71