/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:46:29,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:46:29,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:46:29,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:46:29,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:46:29,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:46:29,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:46:29,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:46:29,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:46:29,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:46:29,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:46:29,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:46:29,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:46:29,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:46:29,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:46:29,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:46:29,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:46:29,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:46:29,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:46:29,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:46:29,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:46:29,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:46:29,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:46:29,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:46:29,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:46:29,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:46:29,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:46:29,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:46:29,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:46:29,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:46:29,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:46:29,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:46:29,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:46:29,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:46:29,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:46:29,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:46:29,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:46:29,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:46:29,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:46:29,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:46:29,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:46:29,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:46:29,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:46:29,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:46:29,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:46:29,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:46:29,846 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:46:29,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:46:29,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:46:29,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:46:29,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:46:29,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:46:29,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:46:29,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:46:29,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:46:29,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:46:29,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:46:29,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:46:29,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:46:29,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:46:29,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:46:29,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:46:29,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:46:29,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:46:29,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:46:29,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:46:29,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:46:29,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:46:29,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:46:29,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:46:29,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:46:29,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:46:30,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:46:30,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:46:30,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:46:30,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:46:30,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:46:30,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-27 17:46:30,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/380e81569/cf889ac9c07f4b168c6259b88d0fbde4/FLAGe7919cc97 [2020-10-27 17:46:31,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:46:31,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-27 17:46:31,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/380e81569/cf889ac9c07f4b168c6259b88d0fbde4/FLAGe7919cc97 [2020-10-27 17:46:31,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/380e81569/cf889ac9c07f4b168c6259b88d0fbde4 [2020-10-27 17:46:31,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:46:31,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:46:31,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:46:31,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:46:31,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:46:31,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:31" (1/1) ... [2020-10-27 17:46:31,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecd33ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:31, skipping insertion in model container [2020-10-27 17:46:31,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:46:31" (1/1) ... [2020-10-27 17:46:31,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:46:32,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:46:33,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:46:33,798 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:46:34,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:46:34,483 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:46:34,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34 WrapperNode [2020-10-27 17:46:34,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:46:34,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:46:34,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:46:34,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:46:34,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... [2020-10-27 17:46:34,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:46:34,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:46:34,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:46:34,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:46:34,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:46:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:46:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:46:34,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:46:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:46:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:46:34,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:46:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:46:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:46:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:46:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:46:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:46:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:46:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:46:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:46:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:46:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:46:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:46:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:46:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:46:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:46:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:46:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:46:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:46:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:46:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:46:39,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:46:39,829 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:46:39,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:39 BoogieIcfgContainer [2020-10-27 17:46:39,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:46:39,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:46:39,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:46:39,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:46:39,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:46:31" (1/3) ... [2020-10-27 17:46:39,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fd7b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:39, skipping insertion in model container [2020-10-27 17:46:39,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:46:34" (2/3) ... [2020-10-27 17:46:39,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fd7b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:46:39, skipping insertion in model container [2020-10-27 17:46:39,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:46:39" (3/3) ... [2020-10-27 17:46:39,842 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2020-10-27 17:46:39,855 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:46:39,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:46:39,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:46:39,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:46:39,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:46:39,909 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:46:39,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:46:39,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:46:39,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:46:39,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:46:39,910 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:46:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:46:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 17:46:39,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:39,959 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] [2020-10-27 17:46:39,959 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash -554118484, now seen corresponding path program 1 times [2020-10-27 17:46:39,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:39,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332033569] [2020-10-27 17:46:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:40,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 17:46:40,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-27 17:46:40,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:46:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:46:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 17:46:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:46:40,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:40,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:40,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:40,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:40,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 17:46:40,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:40,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:40,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:40,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:46:40,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:40,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332033569] [2020-10-27 17:46:40,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:46:40,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:46:40,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403938664] [2020-10-27 17:46:40,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:46:40,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:41,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:46:41,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:46:41,024 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:46:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:51,536 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:46:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:51,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 17:46:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:51,579 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:46:51,579 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:46:51,596 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 [2020-10-27 17:46:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:46:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:46:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:46:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-27 17:46:51,753 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 20 [2020-10-27 17:46:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:51,753 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-27 17:46:51,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:46:51,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-27 17:46:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 17:46:51,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:51,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:46:51,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:46:51,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1046876182, now seen corresponding path program 1 times [2020-10-27 17:46:51,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:51,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150658311] [2020-10-27 17:46:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:51,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:52,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:52,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 17:46:52,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-27 17:46:52,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:46:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:46:52,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:52,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:52,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:46:52,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:46:52,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:46:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:46:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:46:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:52,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150658311] [2020-10-27 17:46:52,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:52,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:46:52,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774725664] [2020-10-27 17:46:52,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:46:52,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:46:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:52,660 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-27 17:47:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:07,165 INFO L93 Difference]: Finished difference Result 6246 states and 10294 transitions. [2020-10-27 17:47:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:47:07,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-27 17:47:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:07,202 INFO L225 Difference]: With dead ends: 6246 [2020-10-27 17:47:07,202 INFO L226 Difference]: Without dead ends: 4698 [2020-10-27 17:47:07,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:47:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2020-10-27 17:47:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4684. [2020-10-27 17:47:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4684 states. [2020-10-27 17:47:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4684 states to 4684 states and 7310 transitions. [2020-10-27 17:47:07,401 INFO L78 Accepts]: Start accepts. Automaton has 4684 states and 7310 transitions. Word has length 95 [2020-10-27 17:47:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:07,402 INFO L481 AbstractCegarLoop]: Abstraction has 4684 states and 7310 transitions. [2020-10-27 17:47:07,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:47:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4684 states and 7310 transitions. [2020-10-27 17:47:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 17:47:07,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:07,416 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:47:07,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:47:07,416 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 873614178, now seen corresponding path program 1 times [2020-10-27 17:47:07,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:07,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38092725] [2020-10-27 17:47:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:08,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:08,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 17:47:08,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:47:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-27 17:47:08,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:47:08,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:47:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:47:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:08,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:47:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:08,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:08,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:08,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:08,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:47:08,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:08,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 17:47:08,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:47:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:47:09,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38092725] [2020-10-27 17:47:09,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:09,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:09,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519315933] [2020-10-27 17:47:09,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:09,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:09,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:09,052 INFO L87 Difference]: Start difference. First operand 4684 states and 7310 transitions. Second operand 5 states. [2020-10-27 17:47:22,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:22,329 INFO L93 Difference]: Finished difference Result 14052 states and 22390 transitions. [2020-10-27 17:47:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:22,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 17:47:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:22,396 INFO L225 Difference]: With dead ends: 14052 [2020-10-27 17:47:22,397 INFO L226 Difference]: Without dead ends: 9374 [2020-10-27 17:47:22,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2020-10-27 17:47:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 9357. [2020-10-27 17:47:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9357 states. [2020-10-27 17:47:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9357 states to 9357 states and 13561 transitions. [2020-10-27 17:47:22,751 INFO L78 Accepts]: Start accepts. Automaton has 9357 states and 13561 transitions. Word has length 99 [2020-10-27 17:47:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:22,754 INFO L481 AbstractCegarLoop]: Abstraction has 9357 states and 13561 transitions. [2020-10-27 17:47:22,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9357 states and 13561 transitions. [2020-10-27 17:47:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 17:47:22,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:22,761 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:47:22,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:47:22,762 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:22,767 INFO L82 PathProgramCache]: Analyzing trace with hash 975526328, now seen corresponding path program 1 times [2020-10-27 17:47:22,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:22,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212629368] [2020-10-27 17:47:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 17:47:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:47:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-27 17:47:23,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 17:47:23,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:47:23,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:47:23,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:23,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:23,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:47:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 17:47:23,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:47:23,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 17:47:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:47:24,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212629368] [2020-10-27 17:47:24,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:24,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:24,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351018424] [2020-10-27 17:47:24,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:24,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:24,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:24,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:24,118 INFO L87 Difference]: Start difference. First operand 9357 states and 13561 transitions. Second operand 5 states. [2020-10-27 17:47:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:37,890 INFO L93 Difference]: Finished difference Result 28036 states and 41672 transitions. [2020-10-27 17:47:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:37,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-27 17:47:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:38,070 INFO L225 Difference]: With dead ends: 28036 [2020-10-27 17:47:38,070 INFO L226 Difference]: Without dead ends: 18685 [2020-10-27 17:47:38,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18685 states. [2020-10-27 17:47:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18685 to 18673. [2020-10-27 17:47:38,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18673 states. [2020-10-27 17:47:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18673 states to 18673 states and 27143 transitions. [2020-10-27 17:47:38,666 INFO L78 Accepts]: Start accepts. Automaton has 18673 states and 27143 transitions. Word has length 110 [2020-10-27 17:47:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:38,668 INFO L481 AbstractCegarLoop]: Abstraction has 18673 states and 27143 transitions. [2020-10-27 17:47:38,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 18673 states and 27143 transitions. [2020-10-27 17:47:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 17:47:38,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:38,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:38,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:47:38,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1584598990, now seen corresponding path program 1 times [2020-10-27 17:47:38,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:38,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066278997] [2020-10-27 17:47:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:39,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 17:47:39,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:47:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-27 17:47:39,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 17:47:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:47:39,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:39,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:39,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:39,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:39,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:39,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 17:47:39,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:39,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:39,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:47:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:47:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 17:47:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:47:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:47:39,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066278997] [2020-10-27 17:47:39,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:39,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:39,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321324544] [2020-10-27 17:47:39,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:39,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:39,769 INFO L87 Difference]: Start difference. First operand 18673 states and 27143 transitions. Second operand 5 states. [2020-10-27 17:47:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:53,998 INFO L93 Difference]: Finished difference Result 52061 states and 78539 transitions. [2020-10-27 17:47:53,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:53,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-27 17:47:54,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:54,167 INFO L225 Difference]: With dead ends: 52061 [2020-10-27 17:47:54,167 INFO L226 Difference]: Without dead ends: 33394 [2020-10-27 17:47:54,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33394 states. [2020-10-27 17:47:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33394 to 33382. [2020-10-27 17:47:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33382 states. [2020-10-27 17:47:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33382 states to 33382 states and 47479 transitions. [2020-10-27 17:47:55,337 INFO L78 Accepts]: Start accepts. Automaton has 33382 states and 47479 transitions. Word has length 123 [2020-10-27 17:47:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:55,338 INFO L481 AbstractCegarLoop]: Abstraction has 33382 states and 47479 transitions. [2020-10-27 17:47:55,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 33382 states and 47479 transitions. [2020-10-27 17:47:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-27 17:47:55,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:55,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:55,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:47:55,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:55,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1407554836, now seen corresponding path program 1 times [2020-10-27 17:47:55,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:55,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9821010] [2020-10-27 17:47:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:57,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:57,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-27 17:47:57,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:47:57,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2451 [2020-10-27 17:47:57,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-27 17:47:57,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:47:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:58,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:58,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:58,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:47:58,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:58,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:58,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:58,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:58,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:58,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:47:58,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-27 17:47:58,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 17:47:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:47:58,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9821010] [2020-10-27 17:47:58,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:58,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:58,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633204694] [2020-10-27 17:47:58,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:58,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:58,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:58,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:58,772 INFO L87 Difference]: Start difference. First operand 33382 states and 47479 transitions. Second operand 5 states. [2020-10-27 17:48:14,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:14,529 INFO L93 Difference]: Finished difference Result 80704 states and 118327 transitions. [2020-10-27 17:48:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:48:14,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-27 17:48:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:14,766 INFO L225 Difference]: With dead ends: 80704 [2020-10-27 17:48:14,766 INFO L226 Difference]: Without dead ends: 48095 [2020-10-27 17:48:14,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:48:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48095 states. [2020-10-27 17:48:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48095 to 41176. [2020-10-27 17:48:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41176 states. [2020-10-27 17:48:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41176 states to 41176 states and 56941 transitions. [2020-10-27 17:48:16,599 INFO L78 Accepts]: Start accepts. Automaton has 41176 states and 56941 transitions. Word has length 288 [2020-10-27 17:48:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:16,600 INFO L481 AbstractCegarLoop]: Abstraction has 41176 states and 56941 transitions. [2020-10-27 17:48:16,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:48:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 41176 states and 56941 transitions. [2020-10-27 17:48:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-27 17:48:16,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:16,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:48:16,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:48:16,646 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:16,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1488314441, now seen corresponding path program 1 times [2020-10-27 17:48:16,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:16,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088062574] [2020-10-27 17:48:16,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:18,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:18,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-27 17:48:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-27 17:48:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:48:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:48:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 365 [2020-10-27 17:48:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:18,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:48:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:48:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:19,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:19,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:20,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:20,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 17:48:20,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-27 17:48:20,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:48:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 363 [2020-10-27 17:48:20,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:48:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:20,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:21,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:48:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 17:48:21,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:48:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 17:48:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:48:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:48:22,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088062574] [2020-10-27 17:48:22,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:48:22,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 17:48:22,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134803343] [2020-10-27 17:48:22,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 17:48:22,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:22,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 17:48:22,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:48:22,532 INFO L87 Difference]: Start difference. First operand 41176 states and 56941 transitions. Second operand 9 states. [2020-10-27 17:48:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:46,533 INFO L93 Difference]: Finished difference Result 91171 states and 127793 transitions. [2020-10-27 17:48:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 17:48:46,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 380 [2020-10-27 17:48:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:46,772 INFO L225 Difference]: With dead ends: 91171 [2020-10-27 17:48:46,773 INFO L226 Difference]: Without dead ends: 50768 [2020-10-27 17:48:46,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-27 17:48:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50768 states. [2020-10-27 17:48:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50768 to 45391. [2020-10-27 17:48:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45391 states. [2020-10-27 17:48:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45391 states to 45391 states and 61825 transitions. [2020-10-27 17:48:48,131 INFO L78 Accepts]: Start accepts. Automaton has 45391 states and 61825 transitions. Word has length 380 [2020-10-27 17:48:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:48:48,132 INFO L481 AbstractCegarLoop]: Abstraction has 45391 states and 61825 transitions. [2020-10-27 17:48:48,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 17:48:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 45391 states and 61825 transitions. [2020-10-27 17:48:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-27 17:48:48,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:48:48,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:48:48,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:48:48,189 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:48:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:48:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash 502301755, now seen corresponding path program 1 times [2020-10-27 17:48:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:48:48,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004868765] [2020-10-27 17:48:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:48:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:53,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4955 [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 17:48:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 362 [2020-10-27 17:48:53,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:48:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:53,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:53,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:48:53,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:53,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:48:53,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:48:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:53,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:48:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:53,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:48:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:53,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:53,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:53,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 17:48:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-27 17:48:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:54,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:54,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 17:48:54,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:54,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-27 17:48:54,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:48:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 363 [2020-10-27 17:48:54,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:55,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:48:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:55,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:55,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:48:55,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:55,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 17:48:55,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:48:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:55,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 17:48:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:48:56,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004868765] [2020-10-27 17:48:56,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:56,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 17:48:56,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575781660] [2020-10-27 17:48:56,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 17:48:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 17:48:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:48:56,628 INFO L87 Difference]: Start difference. First operand 45391 states and 61825 transitions. Second operand 9 states. [2020-10-27 17:49:24,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:49:24,144 INFO L93 Difference]: Finished difference Result 94283 states and 139038 transitions. [2020-10-27 17:49:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 17:49:24,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 525 [2020-10-27 17:49:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:49:24,468 INFO L225 Difference]: With dead ends: 94283 [2020-10-27 17:49:24,469 INFO L226 Difference]: Without dead ends: 49665 [2020-10-27 17:49:24,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 17:49:24,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49665 states. [2020-10-27 17:49:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49665 to 47519. [2020-10-27 17:49:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47519 states. [2020-10-27 17:49:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47519 states to 47519 states and 63531 transitions. [2020-10-27 17:49:26,627 INFO L78 Accepts]: Start accepts. Automaton has 47519 states and 63531 transitions. Word has length 525 [2020-10-27 17:49:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:49:26,629 INFO L481 AbstractCegarLoop]: Abstraction has 47519 states and 63531 transitions. [2020-10-27 17:49:26,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 17:49:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 47519 states and 63531 transitions. [2020-10-27 17:49:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-27 17:49:26,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:49:26,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:49:26,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:49:26,674 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:49:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:49:26,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1595475891, now seen corresponding path program 1 times [2020-10-27 17:49:26,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:49:26,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023948537] [2020-10-27 17:49:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:49:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:30,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:30,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-27 17:49:30,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:49:30,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3913 [2020-10-27 17:49:30,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:30,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:49:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-27 17:49:30,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 362 [2020-10-27 17:49:30,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:49:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:31,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:31,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:49:31,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:49:31,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:49:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:49:31,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:49:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:31,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:31,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 17:49:31,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 17:49:31,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:49:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:49:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-27 17:49:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 17:49:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:32,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 363 [2020-10-27 17:49:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:49:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:49:32,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:49:32,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:49:32,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 17:49:32,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:49:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:49:33,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023948537] [2020-10-27 17:49:33,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:49:33,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 17:49:33,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549436063] [2020-10-27 17:49:33,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 17:49:33,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:49:33,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 17:49:33,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:49:33,809 INFO L87 Difference]: Start difference. First operand 47519 states and 63531 transitions. Second operand 9 states.