/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:09:47,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:09:47,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:09:47,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:09:47,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:09:47,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:09:47,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:09:47,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:09:47,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:09:47,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:09:47,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:09:47,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:09:47,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:09:47,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:09:47,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:09:47,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:09:47,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:09:47,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:09:47,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:09:47,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:09:47,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:09:47,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:09:47,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:09:47,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:09:47,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:09:47,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:09:47,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:09:47,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:09:47,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:09:47,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:09:47,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:09:47,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:09:47,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:09:47,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:09:47,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:09:47,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:09:47,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:09:47,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:09:47,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:09:47,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:09:47,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:09:47,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:09:47,450 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:09:47,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:09:47,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:09:47,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:09:47,456 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:09:47,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:09:47,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:09:47,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:09:47,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:09:47,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:09:47,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:09:47,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:09:47,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:09:47,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:09:47,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:09:47,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:09:47,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:09:47,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:09:47,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:09:47,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:09:47,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:09:47,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:09:47,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:09:47,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:09:47,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:09:47,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:09:47,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:09:47,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:09:47,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:09:47,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:09:47,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:09:47,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:09:47,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:09:47,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:09:47,970 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:09:47,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2020-10-29 05:09:48,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cac5e8e2/540572be18e949efbbb7ad8b084052c3/FLAG18446299f [2020-10-29 05:09:49,188 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:09:49,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label28.c [2020-10-29 05:09:49,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cac5e8e2/540572be18e949efbbb7ad8b084052c3/FLAG18446299f [2020-10-29 05:09:49,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0cac5e8e2/540572be18e949efbbb7ad8b084052c3 [2020-10-29 05:09:49,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:09:49,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:09:49,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:09:49,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:09:49,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:09:49,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:49" (1/1) ... [2020-10-29 05:09:49,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55176a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:49, skipping insertion in model container [2020-10-29 05:09:49,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:09:49" (1/1) ... [2020-10-29 05:09:49,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:09:49,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:09:50,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:09:51,006 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:09:51,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:09:51,681 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:09:51,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51 WrapperNode [2020-10-29 05:09:51,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:09:51,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:09:51,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:09:51,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:09:51,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:51,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:51,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:51,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:51,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:51,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:51,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... [2020-10-29 05:09:52,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:09:52,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:09:52,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:09:52,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:09:52,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:09:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:09:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:09:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:09:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:09:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:09:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:09:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:09:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:09:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:09:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:09:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:09:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:09:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:09:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:09:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:09:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:09:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:09:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:09:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:09:57,029 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:09:57,029 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:09:57,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:57 BoogieIcfgContainer [2020-10-29 05:09:57,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:09:57,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:09:57,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:09:57,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:09:57,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:09:49" (1/3) ... [2020-10-29 05:09:57,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba88c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:57, skipping insertion in model container [2020-10-29 05:09:57,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:09:51" (2/3) ... [2020-10-29 05:09:57,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba88c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:09:57, skipping insertion in model container [2020-10-29 05:09:57,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:09:57" (3/3) ... [2020-10-29 05:09:57,049 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label28.c [2020-10-29 05:09:57,061 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:09:57,068 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:09:57,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:09:57,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:09:57,125 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:09:57,125 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:09:57,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:09:57,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:09:57,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:09:57,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:09:57,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:09:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:09:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-29 05:09:57,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:57,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:57,274 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1657067424, now seen corresponding path program 1 times [2020-10-29 05:09:57,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:57,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821995614] [2020-10-29 05:09:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:03,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:03,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-29 05:10:03,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:10:03,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-29 05:10:03,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:03,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:10:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:10:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 828 [2020-10-29 05:10:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:10:03,968 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:10:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:04,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:04,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:04,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:10:04,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:04,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:04,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:04,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:10:04,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:10:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:10:05,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821995614] [2020-10-29 05:10:05,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:10:05,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:10:05,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784247630] [2020-10-29 05:10:05,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:10:05,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:05,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:10:05,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:10:05,416 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-29 05:10:05,569 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:10:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:14,244 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-29 05:10:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:10:14,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 821 [2020-10-29 05:10:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:14,282 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:10:14,283 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:10:14,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:10:14,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:10:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-29 05:10:14,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-29 05:10:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2956 transitions. [2020-10-29 05:10:14,488 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2956 transitions. Word has length 821 [2020-10-29 05:10:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:14,491 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2956 transitions. [2020-10-29 05:10:14,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:10:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2956 transitions. [2020-10-29 05:10:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-29 05:10:14,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:14,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:10:14,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:10:14,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:14,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:14,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1845698533, now seen corresponding path program 1 times [2020-10-29 05:10:14,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:14,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256371787] [2020-10-29 05:10:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:19,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:19,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 848 [2020-10-29 05:10:19,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:10:19,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 05:10:19,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:19,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 05:10:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 05:10:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 718 [2020-10-29 05:10:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:10:22,691 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 05:10:22,971 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-10-29 05:10:23,259 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2020-10-29 05:10:23,415 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 45 [2020-10-29 05:10:23,715 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 47 [2020-10-29 05:10:23,987 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 43 [2020-10-29 05:10:24,198 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 42 [2020-10-29 05:10:24,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:24,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:24,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:24,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:10:24,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:24,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:10:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:24,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:24,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:10:24,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 05:10:24,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:24,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:24,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:24,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:24,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 05:10:24,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:10:31,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256371787] [2020-10-29 05:10:31,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:31,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 05:10:31,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830946317] [2020-10-29 05:10:31,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 05:10:31,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:31,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 05:10:31,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-29 05:10:31,046 INFO L87 Difference]: Start difference. First operand 1688 states and 2956 transitions. Second operand 19 states. [2020-10-29 05:10:31,426 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:10:31,626 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-29 05:10:35,856 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-29 05:10:38,386 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:10:38,576 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-29 05:10:39,595 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2020-10-29 05:10:42,262 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 128 [2020-10-29 05:10:45,673 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2020-10-29 05:10:46,049 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 119 [2020-10-29 05:10:47,537 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2020-10-29 05:10:50,783 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 116 [2020-10-29 05:10:53,310 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2020-10-29 05:10:53,623 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 112 [2020-10-29 05:10:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:55,951 INFO L93 Difference]: Finished difference Result 4096 states and 7353 transitions. [2020-10-29 05:10:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 05:10:55,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 830 [2020-10-29 05:10:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:55,968 INFO L225 Difference]: With dead ends: 4096 [2020-10-29 05:10:55,969 INFO L226 Difference]: Without dead ends: 2414 [2020-10-29 05:10:55,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-10-29 05:10:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-10-29 05:10:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2399. [2020-10-29 05:10:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-29 05:10:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3677 transitions. [2020-10-29 05:10:56,088 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3677 transitions. Word has length 830 [2020-10-29 05:10:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:56,090 INFO L481 AbstractCegarLoop]: Abstraction has 2399 states and 3677 transitions. [2020-10-29 05:10:56,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 05:10:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3677 transitions. [2020-10-29 05:10:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2020-10-29 05:10:56,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:56,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:10:56,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:10:56,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:56,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:56,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1412095906, now seen corresponding path program 1 times [2020-10-29 05:10:56,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:56,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487007007] [2020-10-29 05:10:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:01,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-29 05:11:01,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:11:01,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-29 05:11:01,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:01,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:11:01,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 05:11:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:11:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:02,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:02,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:02,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:11:02,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:02,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:02,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:02,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:02,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:02,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 05:11:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:11:02,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:02,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 05:11:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:11:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:11:05,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487007007] [2020-10-29 05:11:05,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:05,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:11:05,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71680710] [2020-10-29 05:11:05,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:11:05,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:05,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:11:05,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:11:05,857 INFO L87 Difference]: Start difference. First operand 2399 states and 3677 transitions. Second operand 5 states. [2020-10-29 05:11:06,083 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-29 05:11:16,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:16,318 INFO L93 Difference]: Finished difference Result 5593 states and 8929 transitions. [2020-10-29 05:11:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:11:16,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 831 [2020-10-29 05:11:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:16,333 INFO L225 Difference]: With dead ends: 5593 [2020-10-29 05:11:16,333 INFO L226 Difference]: Without dead ends: 2414 [2020-10-29 05:11:16,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:11:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2020-10-29 05:11:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2399. [2020-10-29 05:11:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2020-10-29 05:11:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 2846 transitions. [2020-10-29 05:11:16,421 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 2846 transitions. Word has length 831 [2020-10-29 05:11:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:16,421 INFO L481 AbstractCegarLoop]: Abstraction has 2399 states and 2846 transitions. [2020-10-29 05:11:16,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:11:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 2846 transitions. [2020-10-29 05:11:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-29 05:11:16,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:16,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:11:16,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:11:16,435 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:16,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:16,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1891575921, now seen corresponding path program 1 times [2020-10-29 05:11:16,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:16,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059089742] [2020-10-29 05:11:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:21,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-29 05:11:21,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:11:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 05:11:21,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:21,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:11:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:11:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 825 [2020-10-29 05:11:21,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:22,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:22,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:22,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:22,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:22,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:11:22,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:22,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:22,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:22,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:11:22,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:11:22,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:22,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:11:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:11:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:11:23,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059089742] [2020-10-29 05:11:23,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:23,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:11:23,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553922822] [2020-10-29 05:11:23,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:11:23,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:23,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:11:23,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:11:23,140 INFO L87 Difference]: Start difference. First operand 2399 states and 2846 transitions. Second operand 5 states. [2020-10-29 05:11:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:29,488 INFO L93 Difference]: Finished difference Result 6497 states and 7896 transitions. [2020-10-29 05:11:29,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:11:29,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 840 [2020-10-29 05:11:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:29,512 INFO L225 Difference]: With dead ends: 6497 [2020-10-29 05:11:29,512 INFO L226 Difference]: Without dead ends: 4104 [2020-10-29 05:11:29,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:11:29,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2020-10-29 05:11:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 4100. [2020-10-29 05:11:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4100 states. [2020-10-29 05:11:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 4961 transitions. [2020-10-29 05:11:29,638 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 4961 transitions. Word has length 840 [2020-10-29 05:11:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:29,639 INFO L481 AbstractCegarLoop]: Abstraction has 4100 states and 4961 transitions. [2020-10-29 05:11:29,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:11:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 4961 transitions. [2020-10-29 05:11:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-29 05:11:29,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:29,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:11:29,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:11:29,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:29,661 INFO L82 PathProgramCache]: Analyzing trace with hash -997079950, now seen corresponding path program 1 times [2020-10-29 05:11:29,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:29,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567308219] [2020-10-29 05:11:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:34,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 889 [2020-10-29 05:11:34,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:11:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 05:11:34,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:34,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:11:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 05:11:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 555 [2020-10-29 05:11:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:37,029 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-29 05:11:37,211 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-29 05:11:37,425 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2020-10-29 05:11:37,701 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2020-10-29 05:11:37,870 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2020-10-29 05:11:38,062 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-29 05:11:38,221 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-10-29 05:11:38,370 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-10-29 05:11:38,507 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-29 05:11:38,666 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-29 05:11:38,892 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 49 [2020-10-29 05:11:39,092 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 44 [2020-10-29 05:11:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:11:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:11:39,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:11:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:11:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:11:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:11:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:39,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:11:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:11:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:11:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:11:46,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567308219] [2020-10-29 05:11:46,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:11:46,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:11:46,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177188823] [2020-10-29 05:11:46,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:11:46,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:11:46,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:11:46,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:11:46,527 INFO L87 Difference]: Start difference. First operand 4100 states and 4961 transitions. Second operand 17 states. [2020-10-29 05:11:47,437 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-29 05:11:47,701 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-29 05:11:49,074 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 151 [2020-10-29 05:11:50,099 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 149 [2020-10-29 05:11:54,284 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:11:54,513 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 05:11:57,015 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-29 05:12:00,401 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:12:00,613 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 05:12:01,935 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 133 [2020-10-29 05:12:02,930 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 128 [2020-10-29 05:12:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:06,665 INFO L93 Difference]: Finished difference Result 8746 states and 10681 transitions. [2020-10-29 05:12:06,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:12:06,671 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 871 [2020-10-29 05:12:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:06,691 INFO L225 Difference]: With dead ends: 8746 [2020-10-29 05:12:06,692 INFO L226 Difference]: Without dead ends: 4423 [2020-10-29 05:12:06,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:12:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2020-10-29 05:12:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4419. [2020-10-29 05:12:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4419 states. [2020-10-29 05:12:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 5285 transitions. [2020-10-29 05:12:06,800 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 5285 transitions. Word has length 871 [2020-10-29 05:12:06,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:06,801 INFO L481 AbstractCegarLoop]: Abstraction has 4419 states and 5285 transitions. [2020-10-29 05:12:06,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:12:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 5285 transitions. [2020-10-29 05:12:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-29 05:12:06,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:06,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:06,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:12:06,820 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:06,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:06,821 INFO L82 PathProgramCache]: Analyzing trace with hash -254001406, now seen corresponding path program 1 times [2020-10-29 05:12:06,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:06,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239405249] [2020-10-29 05:12:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 897 [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:12:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-29 05:12:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 825 [2020-10-29 05:12:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:12,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:12,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:12:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:12,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:12,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:12,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:12,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:12:12,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:12,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 05:12:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:12,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:12,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 05:12:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:12:13,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239405249] [2020-10-29 05:12:13,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:13,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:12:13,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066752169] [2020-10-29 05:12:13,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:12:13,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:12:13,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:12:13,185 INFO L87 Difference]: Start difference. First operand 4419 states and 5285 transitions. Second operand 5 states. [2020-10-29 05:12:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:20,568 INFO L93 Difference]: Finished difference Result 12210 states and 14988 transitions. [2020-10-29 05:12:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:12:20,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 879 [2020-10-29 05:12:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:20,610 INFO L225 Difference]: With dead ends: 12210 [2020-10-29 05:12:20,610 INFO L226 Difference]: Without dead ends: 7797 [2020-10-29 05:12:20,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:12:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2020-10-29 05:12:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7793. [2020-10-29 05:12:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7793 states. [2020-10-29 05:12:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 9135 transitions. [2020-10-29 05:12:20,784 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 9135 transitions. Word has length 879 [2020-10-29 05:12:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:20,786 INFO L481 AbstractCegarLoop]: Abstraction has 7793 states and 9135 transitions. [2020-10-29 05:12:20,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:12:20,786 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 9135 transitions. [2020-10-29 05:12:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-29 05:12:20,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:20,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:20,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:12:20,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:20,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1042991360, now seen corresponding path program 1 times [2020-10-29 05:12:20,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:20,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611973695] [2020-10-29 05:12:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:25,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:25,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 923 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 825 [2020-10-29 05:12:26,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:26,542 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:26,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:26,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:26,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:26,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:26,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:12:26,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:26,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:26,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:26,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:26,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:26,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:26,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 05:12:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:12:26,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:26,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:26,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 05:12:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:26,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:26,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:12:26,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 05:12:26,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:26,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:12:26,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 05:12:27,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611973695] [2020-10-29 05:12:27,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:27,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:12:27,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223403650] [2020-10-29 05:12:27,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:12:27,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:27,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:12:27,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:12:27,496 INFO L87 Difference]: Start difference. First operand 7793 states and 9135 transitions. Second operand 6 states. [2020-10-29 05:12:28,011 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:12:39,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:12:39,254 INFO L93 Difference]: Finished difference Result 18958 states and 22826 transitions. [2020-10-29 05:12:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:12:39,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 903 [2020-10-29 05:12:39,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:12:39,304 INFO L225 Difference]: With dead ends: 18958 [2020-10-29 05:12:39,304 INFO L226 Difference]: Without dead ends: 11171 [2020-10-29 05:12:39,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:12:39,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11171 states. [2020-10-29 05:12:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11171 to 11167. [2020-10-29 05:12:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11167 states. [2020-10-29 05:12:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11167 states to 11167 states and 13069 transitions. [2020-10-29 05:12:39,597 INFO L78 Accepts]: Start accepts. Automaton has 11167 states and 13069 transitions. Word has length 903 [2020-10-29 05:12:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:12:39,598 INFO L481 AbstractCegarLoop]: Abstraction has 11167 states and 13069 transitions. [2020-10-29 05:12:39,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:12:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11167 states and 13069 transitions. [2020-10-29 05:12:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2020-10-29 05:12:39,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:12:39,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:12:39,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:12:39,632 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:12:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:12:39,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1470715816, now seen corresponding path program 1 times [2020-10-29 05:12:39,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:12:39,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100948024] [2020-10-29 05:12:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:12:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:40,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:44,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 935 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-29 05:12:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 730 [2020-10-29 05:12:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:46,574 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:12:46,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:12:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:46,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:46,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:46,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:12:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:46,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:46,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:46,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 05:12:46,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:12:46,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:46,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:12:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:12:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:46,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 05:12:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:12:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:12:46,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:12:46,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 05:12:46,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 05:12:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:12:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 05:12:52,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100948024] [2020-10-29 05:12:52,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:12:52,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 05:12:52,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412757055] [2020-10-29 05:12:52,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 05:12:52,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:12:52,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 05:12:52,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-29 05:12:52,334 INFO L87 Difference]: Start difference. First operand 11167 states and 13069 transitions. Second operand 20 states. [2020-10-29 05:12:54,347 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 118 [2020-10-29 05:12:54,718 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 126 [2020-10-29 05:12:56,135 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-10-29 05:12:57,754 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2020-10-29 05:12:59,806 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 123 [2020-10-29 05:13:01,340 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-10-29 05:13:02,301 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-29 05:13:02,637 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2020-10-29 05:13:07,858 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2020-10-29 05:13:08,877 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-10-29 05:13:09,160 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2020-10-29 05:13:14,908 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-10-29 05:13:15,245 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 110 [2020-10-29 05:13:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:13:16,559 INFO L93 Difference]: Finished difference Result 23053 states and 27170 transitions. [2020-10-29 05:13:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 05:13:16,560 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 915 [2020-10-29 05:13:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:13:16,590 INFO L225 Difference]: With dead ends: 23053 [2020-10-29 05:13:16,591 INFO L226 Difference]: Without dead ends: 11326 [2020-10-29 05:13:16,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 05:13:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11326 states. [2020-10-29 05:13:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 11322. [2020-10-29 05:13:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11322 states. [2020-10-29 05:13:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11322 states to 11322 states and 13228 transitions. [2020-10-29 05:13:16,829 INFO L78 Accepts]: Start accepts. Automaton has 11322 states and 13228 transitions. Word has length 915 [2020-10-29 05:13:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:13:16,829 INFO L481 AbstractCegarLoop]: Abstraction has 11322 states and 13228 transitions. [2020-10-29 05:13:16,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 05:13:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 11322 states and 13228 transitions. [2020-10-29 05:13:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2020-10-29 05:13:16,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:13:16,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:13:16,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:13:16,866 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:13:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:13:16,867 INFO L82 PathProgramCache]: Analyzing trace with hash -668244021, now seen corresponding path program 1 times [2020-10-29 05:13:16,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:13:16,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233987711] [2020-10-29 05:13:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:13:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:17,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:22,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-29 05:13:22,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:13:22,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5131 [2020-10-29 05:13:22,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:22,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:13:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-29 05:13:22,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 503 [2020-10-29 05:13:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:23,963 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-29 05:13:24,120 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-29 05:13:24,308 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-29 05:13:24,557 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 46 [2020-10-29 05:13:24,794 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 42 [2020-10-29 05:13:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:13:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:25,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:25,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:13:25,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:25,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:13:25,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:25,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:13:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:25,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:13:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:13:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:13:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:13:25,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:13:25,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-29 05:13:25,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 05:13:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:13:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 157 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:13:30,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233987711] [2020-10-29 05:13:30,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:13:30,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:13:30,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370365759] [2020-10-29 05:13:30,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:13:30,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:13:30,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:13:30,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:13:30,379 INFO L87 Difference]: Start difference. First operand 11322 states and 13228 transitions. Second operand 17 states.