/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:53:31,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:53:31,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:53:31,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:53:31,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:53:31,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:53:31,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:53:31,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:53:31,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:53:31,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:53:31,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:53:31,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:53:31,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:53:31,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:53:31,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:53:31,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:53:31,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:53:31,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:53:31,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:53:31,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:53:31,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:53:31,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:53:31,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:53:32,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:53:32,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:53:32,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:53:32,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:53:32,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:53:32,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:53:32,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:53:32,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:53:32,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:53:32,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:53:32,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:53:32,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:53:32,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:53:32,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:53:32,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:53:32,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:53:32,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:53:32,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:53:32,042 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 [2020-10-29 06:53:32,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:53:32,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:53:32,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:53:32,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:53:32,102 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:53:32,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:53:32,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:53:32,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:53:32,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:53:32,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:53:32,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:53:32,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:53:32,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:53:32,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:53:32,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:53:32,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:53:32,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:53:32,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:53:32,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:53:32,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:53:32,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:53:32,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:53:32,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:53:32,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:53:32,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:53:32,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:53:32,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:53:32,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:53:32,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:53:32,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:53:32,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:53:32,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:53:32,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:53:32,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:53:32,578 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:53:32,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-29 06:53:32,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3502a76e3/4b792596d5284a068f5ecfb201a22051/FLAG901d5c121 [2020-10-29 06:53:33,770 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:53:33,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-29 06:53:33,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3502a76e3/4b792596d5284a068f5ecfb201a22051/FLAG901d5c121 [2020-10-29 06:53:34,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3502a76e3/4b792596d5284a068f5ecfb201a22051 [2020-10-29 06:53:34,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:53:34,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:53:34,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:53:34,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:53:34,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:53:34,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:53:34" (1/1) ... [2020-10-29 06:53:34,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:34, skipping insertion in model container [2020-10-29 06:53:34,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:53:34" (1/1) ... [2020-10-29 06:53:34,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:53:34,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:53:35,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:53:35,805 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:53:36,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:53:36,529 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:53:36,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36 WrapperNode [2020-10-29 06:53:36,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:53:36,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:53:36,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:53:36,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:53:36,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (1/1) ... [2020-10-29 06:53:36,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:53:36,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:53:36,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:53:36,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:53:36,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (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 [2020-10-29 06:53:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:53:36,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:53:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:53:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:53:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:53:36,973 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:53:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:53:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:53:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:53:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:53:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:53:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:53:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:53:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:53:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:53:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:53:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:53:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:53:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:53:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:53:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:53:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:53:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:53:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:53:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:53:42,573 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:53:42,574 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:53:42,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:53:42 BoogieIcfgContainer [2020-10-29 06:53:42,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:53:42,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:53:42,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:53:42,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:53:42,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:53:34" (1/3) ... [2020-10-29 06:53:42,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d09a045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:53:42, skipping insertion in model container [2020-10-29 06:53:42,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:53:36" (2/3) ... [2020-10-29 06:53:42,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d09a045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:53:42, skipping insertion in model container [2020-10-29 06:53:42,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:53:42" (3/3) ... [2020-10-29 06:53:42,591 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2020-10-29 06:53:42,607 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:53:42,613 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:53:42,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:53:42,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:53:42,676 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:53:42,676 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:53:42,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:53:42,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:53:42,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:53:42,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:53:42,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:53:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:53:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 06:53:42,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:42,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:42,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:42,742 INFO L82 PathProgramCache]: Analyzing trace with hash 925984196, now seen corresponding path program 1 times [2020-10-29 06:53:42,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:42,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543396735] [2020-10-29 06:53:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 06:53:43,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-29 06:53:43,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:43,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 06:53:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:53:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 06:53:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:43,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:43,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543396735] [2020-10-29 06:53:43,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:43,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:53:43,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523275101] [2020-10-29 06:53:43,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:53:43,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:43,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:53:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:53:43,826 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:53:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:54,841 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:53:54,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:54,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-29 06:53:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:54,880 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:53:54,881 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:53:54,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:53:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:53:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:53:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:53:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-29 06:53:55,046 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 26 [2020-10-29 06:53:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:55,047 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-29 06:53:55,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:53:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-29 06:53:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 06:53:55,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:55,053 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:53:55,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:53:55,053 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:55,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1825620838, now seen corresponding path program 1 times [2020-10-29 06:53:55,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:55,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801897706] [2020-10-29 06:53:55,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:55,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:53:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-29 06:53:56,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:53:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:53:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:56,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:53:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 06:53:56,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:56,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:56,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:53:56,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:56,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 06:53:56,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:56,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:53:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:56,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801897706] [2020-10-29 06:53:56,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:56,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:53:56,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524485442] [2020-10-29 06:53:56,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:56,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:56,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:56,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:56,871 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-29 06:54:04,801 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:54:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:10,241 INFO L93 Difference]: Finished difference Result 3978 states and 7198 transitions. [2020-10-29 06:54:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:10,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-29 06:54:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:10,262 INFO L225 Difference]: With dead ends: 3978 [2020-10-29 06:54:10,263 INFO L226 Difference]: Without dead ends: 2430 [2020-10-29 06:54:10,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-10-29 06:54:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2356. [2020-10-29 06:54:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-10-29 06:54:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3820 transitions. [2020-10-29 06:54:10,369 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3820 transitions. Word has length 99 [2020-10-29 06:54:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:10,370 INFO L481 AbstractCegarLoop]: Abstraction has 2356 states and 3820 transitions. [2020-10-29 06:54:10,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3820 transitions. [2020-10-29 06:54:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 06:54:10,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:10,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:10,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:54:10,373 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash -574039006, now seen corresponding path program 1 times [2020-10-29 06:54:10,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:10,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075565388] [2020-10-29 06:54:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:10,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:11,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:11,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 06:54:11,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 871 [2020-10-29 06:54:11,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:11,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:54:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:54:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:11,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:11,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:11,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:11,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:54:11,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:11,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:11,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:11,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:11,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:54:11,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 06:54:11,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:11,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:54:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:54:11,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075565388] [2020-10-29 06:54:11,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:11,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:54:11,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589342180] [2020-10-29 06:54:11,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:54:11,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:54:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:11,700 INFO L87 Difference]: Start difference. First operand 2356 states and 3820 transitions. Second operand 6 states. [2020-10-29 06:54:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:25,269 INFO L93 Difference]: Finished difference Result 7229 states and 11923 transitions. [2020-10-29 06:54:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:54:25,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-29 06:54:25,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:25,309 INFO L225 Difference]: With dead ends: 7229 [2020-10-29 06:54:25,309 INFO L226 Difference]: Without dead ends: 4879 [2020-10-29 06:54:25,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:54:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2020-10-29 06:54:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4823. [2020-10-29 06:54:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4823 states. [2020-10-29 06:54:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 6935 transitions. [2020-10-29 06:54:25,515 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 6935 transitions. Word has length 101 [2020-10-29 06:54:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:25,516 INFO L481 AbstractCegarLoop]: Abstraction has 4823 states and 6935 transitions. [2020-10-29 06:54:25,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 6935 transitions. [2020-10-29 06:54:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 06:54:25,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:25,519 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:54:25,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:54:25,519 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:25,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1352066646, now seen corresponding path program 1 times [2020-10-29 06:54:25,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:25,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288444948] [2020-10-29 06:54:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 06:54:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-29 06:54:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:54:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:26,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:26,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:26,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:54:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:54:26,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:26,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:26,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:54:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:54:26,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288444948] [2020-10-29 06:54:26,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:54:26,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 06:54:26,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882445129] [2020-10-29 06:54:26,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:54:26,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:26,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:54:26,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:54:26,808 INFO L87 Difference]: Start difference. First operand 4823 states and 6935 transitions. Second operand 8 states. [2020-10-29 06:54:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:51,848 INFO L93 Difference]: Finished difference Result 19686 states and 30463 transitions. [2020-10-29 06:54:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:54:51,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-29 06:54:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:51,941 INFO L225 Difference]: With dead ends: 19686 [2020-10-29 06:54:51,941 INFO L226 Difference]: Without dead ends: 14869 [2020-10-29 06:54:51,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:54:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2020-10-29 06:54:52,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 14736. [2020-10-29 06:54:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14736 states. [2020-10-29 06:54:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14736 states to 14736 states and 20807 transitions. [2020-10-29 06:54:52,520 INFO L78 Accepts]: Start accepts. Automaton has 14736 states and 20807 transitions. Word has length 107 [2020-10-29 06:54:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:52,521 INFO L481 AbstractCegarLoop]: Abstraction has 14736 states and 20807 transitions. [2020-10-29 06:54:52,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:54:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 14736 states and 20807 transitions. [2020-10-29 06:54:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 06:54:52,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:52,524 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 06:54:52,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:54:52,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:52,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash -615532594, now seen corresponding path program 1 times [2020-10-29 06:54:52,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:52,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98925159] [2020-10-29 06:54:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:52,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:53,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 06:54:53,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-29 06:54:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:53,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:54:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 06:54:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:53,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:53,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:53,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:53,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:53,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 06:54:53,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:53,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:54:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:53,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:53,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:53,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 06:54:53,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 06:54:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:53,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:53,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 06:54:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 06:54:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:54:53,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98925159] [2020-10-29 06:54:53,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:54:53,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:54:53,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112823213] [2020-10-29 06:54:53,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:53,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:53,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:53,869 INFO L87 Difference]: Start difference. First operand 14736 states and 20807 transitions. Second operand 7 states. [2020-10-29 06:55:12,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:12,509 INFO L93 Difference]: Finished difference Result 44362 states and 65507 transitions. [2020-10-29 06:55:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:55:12,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-29 06:55:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:12,650 INFO L225 Difference]: With dead ends: 44362 [2020-10-29 06:55:12,651 INFO L226 Difference]: Without dead ends: 29632 [2020-10-29 06:55:12,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29632 states. [2020-10-29 06:55:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29632 to 24675. [2020-10-29 06:55:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24675 states. [2020-10-29 06:55:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24675 states to 24675 states and 34381 transitions. [2020-10-29 06:55:13,656 INFO L78 Accepts]: Start accepts. Automaton has 24675 states and 34381 transitions. Word has length 111 [2020-10-29 06:55:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:13,656 INFO L481 AbstractCegarLoop]: Abstraction has 24675 states and 34381 transitions. [2020-10-29 06:55:13,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 24675 states and 34381 transitions. [2020-10-29 06:55:13,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 06:55:13,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:13,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:13,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:55:13,664 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:13,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash -845304968, now seen corresponding path program 1 times [2020-10-29 06:55:13,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:13,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693205187] [2020-10-29 06:55:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 06:55:15,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-29 06:55:15,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:55:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 06:55:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:15,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:15,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:15,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:55:15,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:15,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:55:15,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 06:55:15,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:55:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:55:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:55:15,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:15,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 06:55:15,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:55:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:55:15,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693205187] [2020-10-29 06:55:15,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:15,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:15,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742865496] [2020-10-29 06:55:15,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:15,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:15,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:15,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:15,875 INFO L87 Difference]: Start difference. First operand 24675 states and 34381 transitions. Second operand 7 states. [2020-10-29 06:55:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:35,056 INFO L93 Difference]: Finished difference Result 51271 states and 71566 transitions. [2020-10-29 06:55:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:55:35,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-29 06:55:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:35,175 INFO L225 Difference]: With dead ends: 51271 [2020-10-29 06:55:35,176 INFO L226 Difference]: Without dead ends: 22569 [2020-10-29 06:55:35,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22569 states. [2020-10-29 06:55:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22569 to 22260. [2020-10-29 06:55:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22260 states. [2020-10-29 06:55:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22260 states to 22260 states and 27233 transitions. [2020-10-29 06:55:35,906 INFO L78 Accepts]: Start accepts. Automaton has 22260 states and 27233 transitions. Word has length 214 [2020-10-29 06:55:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:35,907 INFO L481 AbstractCegarLoop]: Abstraction has 22260 states and 27233 transitions. [2020-10-29 06:55:35,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 22260 states and 27233 transitions. [2020-10-29 06:55:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 06:55:35,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:35,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:55:35,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:55:35,913 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1344506672, now seen corresponding path program 1 times [2020-10-29 06:55:35,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:35,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559390713] [2020-10-29 06:55:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:36,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2176 [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:55:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:55:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:38,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:38,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:55:38,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:38,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:38,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:38,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:38,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:55:38,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:55:38,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:38,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:55:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:38,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:55:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:38,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:38,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:55:38,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 06:55:38,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:38,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:38,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:55:38,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:55:38,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559390713] [2020-10-29 06:55:38,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:38,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:38,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441782823] [2020-10-29 06:55:38,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:38,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:38,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:38,964 INFO L87 Difference]: Start difference. First operand 22260 states and 27233 transitions. Second operand 7 states. [2020-10-29 06:56:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:00,097 INFO L93 Difference]: Finished difference Result 56007 states and 73494 transitions. [2020-10-29 06:56:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:56:00,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-29 06:56:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:00,253 INFO L225 Difference]: With dead ends: 56007 [2020-10-29 06:56:00,254 INFO L226 Difference]: Without dead ends: 33753 [2020-10-29 06:56:00,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:56:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33753 states. [2020-10-29 06:56:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33753 to 31102. [2020-10-29 06:56:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31102 states. [2020-10-29 06:56:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31102 states to 31102 states and 39920 transitions. [2020-10-29 06:56:01,396 INFO L78 Accepts]: Start accepts. Automaton has 31102 states and 39920 transitions. Word has length 246 [2020-10-29 06:56:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:01,397 INFO L481 AbstractCegarLoop]: Abstraction has 31102 states and 39920 transitions. [2020-10-29 06:56:01,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 31102 states and 39920 transitions. [2020-10-29 06:56:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 06:56:01,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:01,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:56:01,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:56:01,404 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:01,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2109656450, now seen corresponding path program 1 times [2020-10-29 06:56:01,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:01,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691746691] [2020-10-29 06:56:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:06,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:06,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 06:56:06,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:56:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4970 [2020-10-29 06:56:06,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:06,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:56:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:56:06,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:06,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:06,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:06,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:06,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:56:06,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:06,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:06,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:06,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:56:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:06,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:07,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:07,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:56:07,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:56:07,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:07,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 06:56:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 06:56:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 36 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:56:07,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691746691] [2020-10-29 06:56:07,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:07,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:07,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692477188] [2020-10-29 06:56:07,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:07,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:07,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:07,749 INFO L87 Difference]: Start difference. First operand 31102 states and 39920 transitions. Second operand 7 states. [2020-10-29 06:56:11,381 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 06:56:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:27,876 INFO L93 Difference]: Finished difference Result 63364 states and 81817 transitions. [2020-10-29 06:56:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:56:27,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 06:56:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:28,008 INFO L225 Difference]: With dead ends: 63364 [2020-10-29 06:56:28,008 INFO L226 Difference]: Without dead ends: 32268 [2020-10-29 06:56:28,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:56:28,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32268 states. [2020-10-29 06:56:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32268 to 32004. [2020-10-29 06:56:28,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32004 states. [2020-10-29 06:56:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32004 states to 32004 states and 41030 transitions. [2020-10-29 06:56:28,836 INFO L78 Accepts]: Start accepts. Automaton has 32004 states and 41030 transitions. Word has length 271 [2020-10-29 06:56:28,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:28,836 INFO L481 AbstractCegarLoop]: Abstraction has 32004 states and 41030 transitions. [2020-10-29 06:56:28,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:28,837 INFO L276 IsEmpty]: Start isEmpty. Operand 32004 states and 41030 transitions. [2020-10-29 06:56:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 06:56:28,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:28,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:56:28,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:56:28,847 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:28,848 INFO L82 PathProgramCache]: Analyzing trace with hash 37121670, now seen corresponding path program 1 times [2020-10-29 06:56:28,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:28,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148183426] [2020-10-29 06:56:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:29,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:29,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:34,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:34,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 06:56:34,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:56:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 06:56:34,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:34,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:56:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:56:34,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 06:56:34,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:34,366 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:56:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:34,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:34,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:34,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:34,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:34,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:56:34,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:34,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:34,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:34,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:56:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 06:56:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:34,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:56:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:56:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:34,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:56:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:56:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:35,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:56:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:35,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 06:56:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:35,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:35,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:35,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:56:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-29 06:56:35,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:35,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:56:35,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 234 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 06:56:35,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148183426] [2020-10-29 06:56:35,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:35,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:35,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207307390] [2020-10-29 06:56:35,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:35,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:35,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:35,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:35,621 INFO L87 Difference]: Start difference. First operand 32004 states and 41030 transitions. Second operand 7 states. [2020-10-29 06:56:35,771 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:57:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:01,832 INFO L93 Difference]: Finished difference Result 83503 states and 112370 transitions. [2020-10-29 06:57:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:57:01,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-29 06:57:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:02,088 INFO L225 Difference]: With dead ends: 83503 [2020-10-29 06:57:02,089 INFO L226 Difference]: Without dead ends: 52272 [2020-10-29 06:57:02,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:57:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52272 states. [2020-10-29 06:57:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52272 to 51198. [2020-10-29 06:57:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51198 states. [2020-10-29 06:57:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51198 states to 51198 states and 66666 transitions. [2020-10-29 06:57:03,565 INFO L78 Accepts]: Start accepts. Automaton has 51198 states and 66666 transitions. Word has length 357 [2020-10-29 06:57:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:03,566 INFO L481 AbstractCegarLoop]: Abstraction has 51198 states and 66666 transitions. [2020-10-29 06:57:03,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 51198 states and 66666 transitions. [2020-10-29 06:57:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-29 06:57:03,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:03,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:57:03,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:57:03,578 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash 224815244, now seen corresponding path program 1 times [2020-10-29 06:57:03,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:03,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004309164] [2020-10-29 06:57:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:04,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:08,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:08,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-29 06:57:08,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:57:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 06:57:08,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:08,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:57:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 06:57:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:08,976 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:57:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:08,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:57:08,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:08,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:09,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:57:09,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:09,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:09,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:57:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:57:09,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:57:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:09,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:09,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:57:09,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 06:57:09,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:09,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:09,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:09,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:09,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:57:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:09,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 06:57:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:09,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:09,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 06:57:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 319 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 06:57:10,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004309164] [2020-10-29 06:57:10,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:10,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:57:10,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215650187] [2020-10-29 06:57:10,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:57:10,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:57:10,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:57:10,119 INFO L87 Difference]: Start difference. First operand 51198 states and 66666 transitions. Second operand 10 states. [2020-10-29 06:57:11,838 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68