/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:47:02,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:47:02,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:47:03,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:47:03,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:47:03,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:47:03,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:47:03,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:47:03,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:47:03,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:47:03,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:47:03,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:47:03,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:47:03,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:47:03,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:47:03,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:47:03,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:47:03,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:47:03,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:47:03,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:47:03,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:47:03,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:47:03,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:47:03,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:47:03,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:47:03,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:47:03,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:47:03,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:47:03,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:47:03,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:47:03,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:47:03,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:47:03,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:47:03,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:47:03,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:47:03,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:47:03,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:47:03,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:47:03,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:47:03,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:47:03,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:47:03,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:47:03,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:47:03,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:47:03,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:47:03,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:47:03,164 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:47:03,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:47:03,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:47:03,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:47:03,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:47:03,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:47:03,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:47:03,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:47:03,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:47:03,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:47:03,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:47:03,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:47:03,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:47:03,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:47:03,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:47:03,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:47:03,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:47:03,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:47:03,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:47:03,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:47:03,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:47:03,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:47:03,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:47:03,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:47:03,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:47:03,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:47:03,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:47:03,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:47:03,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:47:03,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:47:03,661 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:47:03,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-26 22:47:03,750 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e302027b/98c50c91e82f4dac822d44ffe0ffe7ae/FLAG8f435b06e [2020-10-26 22:47:04,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:47:04,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label03.c [2020-10-26 22:47:04,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e302027b/98c50c91e82f4dac822d44ffe0ffe7ae/FLAG8f435b06e [2020-10-26 22:47:05,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e302027b/98c50c91e82f4dac822d44ffe0ffe7ae [2020-10-26 22:47:05,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:47:05,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:47:05,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:47:05,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:47:05,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:47:05,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:47:05" (1/1) ... [2020-10-26 22:47:05,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263e3524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:05, skipping insertion in model container [2020-10-26 22:47:05,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:47:05" (1/1) ... [2020-10-26 22:47:05,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:47:05,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:47:06,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:47:06,988 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:47:07,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:47:07,801 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:47:07,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07 WrapperNode [2020-10-26 22:47:07,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:47:07,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:47:07,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:47:07,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:47:07,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:07,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:07,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:07,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:08,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:08,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:08,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... [2020-10-26 22:47:08,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:47:08,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:47:08,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:47:08,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:47:08,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:47:08,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:47:08,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:47:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:47:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:47:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:47:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:47:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:47:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:47:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:47:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:47:08,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:47:08,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:47:08,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:47:13,370 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:47:13,370 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:47:13,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:47:13 BoogieIcfgContainer [2020-10-26 22:47:13,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:47:13,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:47:13,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:47:13,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:47:13,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:47:05" (1/3) ... [2020-10-26 22:47:13,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac5b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:47:13, skipping insertion in model container [2020-10-26 22:47:13,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:47:07" (2/3) ... [2020-10-26 22:47:13,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac5b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:47:13, skipping insertion in model container [2020-10-26 22:47:13,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:47:13" (3/3) ... [2020-10-26 22:47:13,390 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label03.c [2020-10-26 22:47:13,400 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:47:13,406 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:47:13,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:47:13,456 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:47:13,457 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:47:13,457 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:47:13,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:47:13,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:47:13,457 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:47:13,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:47:13,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:47:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:47:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 22:47:13,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:13,513 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] [2020-10-26 22:47:13,514 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash 925984196, now seen corresponding path program 1 times [2020-10-26 22:47:13,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:13,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472464533] [2020-10-26 22:47:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 22:47:14,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-26 22:47:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:47:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:14,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 22:47:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:47:14,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:14,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:14,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:47:14,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:14,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:47:14,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472464533] [2020-10-26 22:47:14,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:47:14,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:47:14,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224850677] [2020-10-26 22:47:14,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:47:14,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:14,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:47:14,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:47:14,476 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:47:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:24,566 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:47:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:47:24,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 22:47:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:24,601 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:47:24,601 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:47:24,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:47:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:47:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:47:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:47:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-26 22:47:24,808 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 26 [2020-10-26 22:47:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:24,809 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-26 22:47:24,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:47:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-26 22:47:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-26 22:47:24,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:24,820 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] [2020-10-26 22:47:24,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:47:24,820 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1825620838, now seen corresponding path program 1 times [2020-10-26 22:47:24,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:24,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379208298] [2020-10-26 22:47:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:26,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:47:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-10-26 22:47:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:47:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:47:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:47:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:26,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:26,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:26,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:26,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 22:47:26,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:26,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:26,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:26,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:26,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:26,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:47:26,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:26,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:47:26,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:26,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:26,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:47:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:47:26,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379208298] [2020-10-26 22:47:26,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:47:26,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:47:26,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452496988] [2020-10-26 22:47:26,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:47:26,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:47:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:47:26,660 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 7 states. [2020-10-26 22:47:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:38,987 INFO L93 Difference]: Finished difference Result 3978 states and 7198 transitions. [2020-10-26 22:47:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:47:38,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-26 22:47:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:39,009 INFO L225 Difference]: With dead ends: 3978 [2020-10-26 22:47:39,009 INFO L226 Difference]: Without dead ends: 2430 [2020-10-26 22:47:39,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:47:39,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-10-26 22:47:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2356. [2020-10-26 22:47:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2356 states. [2020-10-26 22:47:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3820 transitions. [2020-10-26 22:47:39,106 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3820 transitions. Word has length 99 [2020-10-26 22:47:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:39,107 INFO L481 AbstractCegarLoop]: Abstraction has 2356 states and 3820 transitions. [2020-10-26 22:47:39,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:47:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3820 transitions. [2020-10-26 22:47:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 22:47:39,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:39,110 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] [2020-10-26 22:47:39,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:47:39,110 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:39,111 INFO L82 PathProgramCache]: Analyzing trace with hash -574039006, now seen corresponding path program 1 times [2020-10-26 22:47:39,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:39,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899022813] [2020-10-26 22:47:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:39,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:40,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:40,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 22:47:40,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-26 22:47:40,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:47:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:40,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 22:47:40,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:40,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:40,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:40,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:40,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 22:47:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:40,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:40,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:47:40,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:40,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:47:40,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:40,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:47:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:47:40,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899022813] [2020-10-26 22:47:40,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:47:40,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:47:40,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555112808] [2020-10-26 22:47:40,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:47:40,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:40,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:47:40,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:47:40,492 INFO L87 Difference]: Start difference. First operand 2356 states and 3820 transitions. Second operand 6 states. [2020-10-26 22:47:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:47:52,940 INFO L93 Difference]: Finished difference Result 7227 states and 11956 transitions. [2020-10-26 22:47:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:47:52,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-10-26 22:47:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:47:52,977 INFO L225 Difference]: With dead ends: 7227 [2020-10-26 22:47:52,977 INFO L226 Difference]: Without dead ends: 4877 [2020-10-26 22:47:52,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:47:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4877 states. [2020-10-26 22:47:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4877 to 4798. [2020-10-26 22:47:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4798 states. [2020-10-26 22:47:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6900 transitions. [2020-10-26 22:47:53,201 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6900 transitions. Word has length 101 [2020-10-26 22:47:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:47:53,202 INFO L481 AbstractCegarLoop]: Abstraction has 4798 states and 6900 transitions. [2020-10-26 22:47:53,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:47:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6900 transitions. [2020-10-26 22:47:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-26 22:47:53,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:47:53,207 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] [2020-10-26 22:47:53,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:47:53,208 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:47:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:47:53,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1352066646, now seen corresponding path program 1 times [2020-10-26 22:47:53,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:47:53,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521737335] [2020-10-26 22:47:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:47:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:53,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:54,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:54,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 22:47:54,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:47:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-10-26 22:47:54,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:47:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:47:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:47:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:47:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:54,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:47:54,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:54,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 22:47:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:47:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:47:54,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:47:54,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:54,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:47:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:47:54,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:47:54,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:47:54,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 22:47:54,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:47:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 22:47:54,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:47:54,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:47:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:47:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 22:47:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:47:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:47:54,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521737335] [2020-10-26 22:47:54,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:47:54,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 22:47:54,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212653157] [2020-10-26 22:47:54,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:47:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:47:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:47:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:47:54,689 INFO L87 Difference]: Start difference. First operand 4798 states and 6900 transitions. Second operand 8 states. [2020-10-26 22:48:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:17,795 INFO L93 Difference]: Finished difference Result 19646 states and 30340 transitions. [2020-10-26 22:48:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:48:17,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2020-10-26 22:48:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:17,921 INFO L225 Difference]: With dead ends: 19646 [2020-10-26 22:48:17,922 INFO L226 Difference]: Without dead ends: 14854 [2020-10-26 22:48:17,944 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 [2020-10-26 22:48:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14854 states. [2020-10-26 22:48:18,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14854 to 14705. [2020-10-26 22:48:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14705 states. [2020-10-26 22:48:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14705 states to 14705 states and 20758 transitions. [2020-10-26 22:48:18,579 INFO L78 Accepts]: Start accepts. Automaton has 14705 states and 20758 transitions. Word has length 107 [2020-10-26 22:48:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:18,583 INFO L481 AbstractCegarLoop]: Abstraction has 14705 states and 20758 transitions. [2020-10-26 22:48:18,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:48:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 14705 states and 20758 transitions. [2020-10-26 22:48:18,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 22:48:18,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:18,597 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] [2020-10-26 22:48:18,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:48:18,597 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:18,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:18,598 INFO L82 PathProgramCache]: Analyzing trace with hash -615532594, now seen corresponding path program 1 times [2020-10-26 22:48:18,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:18,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776172717] [2020-10-26 22:48:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:18,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:19,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:19,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 22:48:19,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:48:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-26 22:48:19,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:48:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:48:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:48:19,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:19,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:19,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:19,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:48:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:48:19,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:19,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:19,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:19,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:19,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:48:19,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:48:19,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:19,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:48:19,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:48:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:48:19,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776172717] [2020-10-26 22:48:19,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:48:19,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:48:19,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710572156] [2020-10-26 22:48:19,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:48:19,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:19,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:48:19,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:48:19,965 INFO L87 Difference]: Start difference. First operand 14705 states and 20758 transitions. Second operand 7 states. [2020-10-26 22:48:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:37,187 INFO L93 Difference]: Finished difference Result 44316 states and 65329 transitions. [2020-10-26 22:48:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:48:37,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-26 22:48:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:37,339 INFO L225 Difference]: With dead ends: 44316 [2020-10-26 22:48:37,340 INFO L226 Difference]: Without dead ends: 29617 [2020-10-26 22:48:37,399 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 [2020-10-26 22:48:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29617 states. [2020-10-26 22:48:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29617 to 24660. [2020-10-26 22:48:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24660 states. [2020-10-26 22:48:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24660 states to 24660 states and 34356 transitions. [2020-10-26 22:48:38,354 INFO L78 Accepts]: Start accepts. Automaton has 24660 states and 34356 transitions. Word has length 111 [2020-10-26 22:48:38,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:48:38,355 INFO L481 AbstractCegarLoop]: Abstraction has 24660 states and 34356 transitions. [2020-10-26 22:48:38,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:48:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 24660 states and 34356 transitions. [2020-10-26 22:48:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-26 22:48:38,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:48:38,362 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] [2020-10-26 22:48:38,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:48:38,362 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:48:38,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:48:38,363 INFO L82 PathProgramCache]: Analyzing trace with hash -845304968, now seen corresponding path program 1 times [2020-10-26 22:48:38,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:48:38,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666171673] [2020-10-26 22:48:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:48:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:40,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-26 22:48:40,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:48:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-26 22:48:40,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:48:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 22:48:40,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:40,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:48:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:40,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:40,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:48:40,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 22:48:40,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:48:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:48:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:48:40,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:48:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:40,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:40,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:48:40,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 22:48:40,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:48:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:48:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:48:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:40,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:48:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:48:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:48:40,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:48:40,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:48:40,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:48:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-26 22:48:40,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:48:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:48:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:48:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:48:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:48:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:48:40,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666171673] [2020-10-26 22:48:40,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:48:40,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:48:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55520056] [2020-10-26 22:48:40,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:48:40,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:48:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:48:40,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:48:40,955 INFO L87 Difference]: Start difference. First operand 24660 states and 34356 transitions. Second operand 7 states. [2020-10-26 22:48:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:48:59,521 INFO L93 Difference]: Finished difference Result 51269 states and 71552 transitions. [2020-10-26 22:48:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:48:59,524 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-26 22:48:59,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:48:59,603 INFO L225 Difference]: With dead ends: 51269 [2020-10-26 22:48:59,604 INFO L226 Difference]: Without dead ends: 22631 [2020-10-26 22:48:59,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:48:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22631 states. [2020-10-26 22:49:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22631 to 22280. [2020-10-26 22:49:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22280 states. [2020-10-26 22:49:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22280 states to 22280 states and 27263 transitions. [2020-10-26 22:49:00,521 INFO L78 Accepts]: Start accepts. Automaton has 22280 states and 27263 transitions. Word has length 214 [2020-10-26 22:49:00,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:00,522 INFO L481 AbstractCegarLoop]: Abstraction has 22280 states and 27263 transitions. [2020-10-26 22:49:00,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:49:00,522 INFO L276 IsEmpty]: Start isEmpty. Operand 22280 states and 27263 transitions. [2020-10-26 22:49:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-26 22:49:00,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:00,527 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] [2020-10-26 22:49:00,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:49:00,528 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:00,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1344506672, now seen corresponding path program 1 times [2020-10-26 22:49:00,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:00,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862427935] [2020-10-26 22:49:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:02,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-26 22:49:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:49:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2313 [2020-10-26 22:49:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:49:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:49:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:03,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:03,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:03,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:03,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:49:03,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:03,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:03,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:03,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:03,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:03,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:49:03,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:03,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 22:49:03,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:49:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:49:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:03,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:03,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:49:03,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 22:49:03,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:49:03,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:49:03,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862427935] [2020-10-26 22:49:03,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:03,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:49:03,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101099652] [2020-10-26 22:49:03,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:03,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:03,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:03,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:03,732 INFO L87 Difference]: Start difference. First operand 22280 states and 27263 transitions. Second operand 7 states. [2020-10-26 22:49:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:24,918 INFO L93 Difference]: Finished difference Result 56426 states and 74988 transitions. [2020-10-26 22:49:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:49:24,921 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-26 22:49:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:25,055 INFO L225 Difference]: With dead ends: 56426 [2020-10-26 22:49:25,056 INFO L226 Difference]: Without dead ends: 34152 [2020-10-26 22:49:25,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:49:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34152 states. [2020-10-26 22:49:26,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34152 to 31265. [2020-10-26 22:49:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31265 states. [2020-10-26 22:49:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31265 states to 31265 states and 40212 transitions. [2020-10-26 22:49:26,217 INFO L78 Accepts]: Start accepts. Automaton has 31265 states and 40212 transitions. Word has length 246 [2020-10-26 22:49:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:26,218 INFO L481 AbstractCegarLoop]: Abstraction has 31265 states and 40212 transitions. [2020-10-26 22:49:26,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:49:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 31265 states and 40212 transitions. [2020-10-26 22:49:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-26 22:49:26,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:26,224 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] [2020-10-26 22:49:26,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:49:26,225 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:26,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2109656450, now seen corresponding path program 1 times [2020-10-26 22:49:26,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:26,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353051157] [2020-10-26 22:49:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:28,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:31,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:31,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-26 22:49:31,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:49:31,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 22:49:31,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:31,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:49:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:49:31,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:49:31,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:31,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:31,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:31,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:31,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 22:49:31,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:49:31,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:31,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:49:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-26 22:49:31,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:49:31,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:49:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-26 22:49:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:32,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:32,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:49:32,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 22:49:32,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 22:49:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:32,484 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 36 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:49:32,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353051157] [2020-10-26 22:49:32,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:32,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:49:32,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487484414] [2020-10-26 22:49:32,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:49:32,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:32,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:49:32,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:49:32,497 INFO L87 Difference]: Start difference. First operand 31265 states and 40212 transitions. Second operand 7 states. [2020-10-26 22:49:32,663 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 22:49:36,470 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-26 22:49:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:49:50,527 INFO L93 Difference]: Finished difference Result 63677 states and 82105 transitions. [2020-10-26 22:49:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:49:50,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-26 22:49:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:49:50,660 INFO L225 Difference]: With dead ends: 63677 [2020-10-26 22:49:50,660 INFO L226 Difference]: Without dead ends: 32418 [2020-10-26 22:49:50,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:49:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32418 states. [2020-10-26 22:49:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32418 to 32139. [2020-10-26 22:49:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32139 states. [2020-10-26 22:49:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32139 states to 32139 states and 41194 transitions. [2020-10-26 22:49:51,769 INFO L78 Accepts]: Start accepts. Automaton has 32139 states and 41194 transitions. Word has length 271 [2020-10-26 22:49:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:49:51,770 INFO L481 AbstractCegarLoop]: Abstraction has 32139 states and 41194 transitions. [2020-10-26 22:49:51,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:49:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 32139 states and 41194 transitions. [2020-10-26 22:49:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-26 22:49:51,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:49:51,780 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] [2020-10-26 22:49:51,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:49:51,780 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:49:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:49:51,781 INFO L82 PathProgramCache]: Analyzing trace with hash 37121670, now seen corresponding path program 1 times [2020-10-26 22:49:51,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:49:51,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958822962] [2020-10-26 22:49:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:49:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:56,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-26 22:49:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:49:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 22:49:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:49:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:49:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:57,084 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 22:49:57,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:49:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:57,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:57,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:57,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:49:57,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:57,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:49:57,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:57,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:57,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:49:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:57,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:49:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 22:49:57,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:57,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:49:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:49:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:49:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:49:57,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:49:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:57,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:57,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:49:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 22:49:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:49:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:49:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:49:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:57,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-26 22:49:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:49:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:49:57,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:49:57,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:49:57,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:49:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 22:49:57,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:49:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:49:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-26 22:49:57,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:49:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:49:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 144 proven. 88 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 22:49:58,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958822962] [2020-10-26 22:49:58,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:49:58,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:49:58,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668854715] [2020-10-26 22:49:58,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:49:58,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:49:58,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:49:58,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:49:58,140 INFO L87 Difference]: Start difference. First operand 32139 states and 41194 transitions. Second operand 8 states. [2020-10-26 22:49:58,311 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:50:29,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:50:29,681 INFO L93 Difference]: Finished difference Result 117427 states and 160305 transitions. [2020-10-26 22:50:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 22:50:29,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 357 [2020-10-26 22:50:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:50:30,079 INFO L225 Difference]: With dead ends: 117427 [2020-10-26 22:50:30,079 INFO L226 Difference]: Without dead ends: 85278 [2020-10-26 22:50:30,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:50:30,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85278 states. [2020-10-26 22:50:32,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85278 to 79826. [2020-10-26 22:50:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79826 states. [2020-10-26 22:50:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79826 states to 79826 states and 108518 transitions. [2020-10-26 22:50:33,217 INFO L78 Accepts]: Start accepts. Automaton has 79826 states and 108518 transitions. Word has length 357 [2020-10-26 22:50:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:50:33,218 INFO L481 AbstractCegarLoop]: Abstraction has 79826 states and 108518 transitions. [2020-10-26 22:50:33,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:50:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 79826 states and 108518 transitions. [2020-10-26 22:50:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-26 22:50:33,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:50:33,237 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, 1, 1, 1, 1] [2020-10-26 22:50:33,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:50:33,237 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:50:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:50:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1224181250, now seen corresponding path program 1 times [2020-10-26 22:50:33,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:50:33,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254632894] [2020-10-26 22:50:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:50:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:33,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:34,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:37,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-26 22:50:37,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:50:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4431 [2020-10-26 22:50:37,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:50:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:50:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-26 22:50:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:50:38,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:50:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:38,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:38,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:50:38,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:38,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:50:38,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:50:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:50:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:50:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:50:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:38,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:50:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 22:50:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:50:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:50:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:50:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:50:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:38,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:50:38,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:50:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 22:50:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:50:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:50:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:50:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-26 22:50:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:50:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:50:38,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:50:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 22:50:38,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:50:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 22:50:38,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:50:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:50:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:50:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-26 22:50:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:50:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 316 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 22:50:39,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254632894] [2020-10-26 22:50:39,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:50:39,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 22:50:39,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632961311] [2020-10-26 22:50:39,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:50:39,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:50:39,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:50:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:50:39,472 INFO L87 Difference]: Start difference. First operand 79826 states and 108518 transitions. Second operand 9 states.