/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:23:47,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:23:47,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:23:47,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:23:47,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:23:47,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:23:47,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:23:47,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:23:47,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:23:47,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:23:47,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:23:47,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:23:47,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:23:47,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:23:47,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:23:47,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:23:47,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:23:47,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:23:47,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:23:47,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:23:47,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:23:47,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:23:47,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:23:47,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:23:47,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:23:47,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:23:47,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:23:47,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:23:47,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:23:47,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:23:47,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:23:47,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:23:47,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:23:47,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:23:47,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:23:47,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:23:47,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:23:47,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:23:47,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:23:47,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:23:47,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:23:47,285 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 [2020-10-28 10:23:47,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:23:47,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:23:47,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:23:47,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:23:47,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:23:47,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:23:47,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:23:47,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:23:47,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:23:47,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:23:47,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:23:47,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:23:47,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:23:47,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:23:47,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:23:47,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:23:47,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:23:47,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:23:47,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:23:47,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:23:47,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:23:47,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:23:47,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:23:47,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:23:47,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:23:47,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:23:47,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:23:47,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:23:47,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:23:47,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:23:47,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:23:47,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:23:47,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:23:47,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:23:47,850 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:23:47,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label05.c [2020-10-28 10:23:47,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/518bb4fc0/30f09b3590364733a42f8b0f3da10fd6/FLAGbdaaad45a [2020-10-28 10:23:48,968 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:23:48,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label05.c [2020-10-28 10:23:48,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/518bb4fc0/30f09b3590364733a42f8b0f3da10fd6/FLAGbdaaad45a [2020-10-28 10:23:49,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/518bb4fc0/30f09b3590364733a42f8b0f3da10fd6 [2020-10-28 10:23:49,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:23:49,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:23:49,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:23:49,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:23:49,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:23:49,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:23:49" (1/1) ... [2020-10-28 10:23:49,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58af187a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:49, skipping insertion in model container [2020-10-28 10:23:49,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:23:49" (1/1) ... [2020-10-28 10:23:49,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:23:49,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:23:51,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:23:51,236 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:23:51,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:23:52,005 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:23:52,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52 WrapperNode [2020-10-28 10:23:52,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:23:52,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:23:52,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:23:52,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:23:52,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (1/1) ... [2020-10-28 10:23:52,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:23:52,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:23:52,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:23:52,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:23:52,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (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 [2020-10-28 10:23:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:23:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:23:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:23:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:23:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:23:52,439 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:23:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:23:52,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:23:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:23:52,440 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:23:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:23:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:23:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:23:52,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:23:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:23:52,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:23:52,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:23:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:23:52,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:23:57,499 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:23:57,500 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:23:57,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:23:57 BoogieIcfgContainer [2020-10-28 10:23:57,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:23:57,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:23:57,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:23:57,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:23:57,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:23:49" (1/3) ... [2020-10-28 10:23:57,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14aaadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:23:57, skipping insertion in model container [2020-10-28 10:23:57,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:23:52" (2/3) ... [2020-10-28 10:23:57,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14aaadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:23:57, skipping insertion in model container [2020-10-28 10:23:57,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:23:57" (3/3) ... [2020-10-28 10:23:57,516 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label05.c [2020-10-28 10:23:57,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:23:57,534 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:23:57,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:23:57,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:23:57,591 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:23:57,592 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:23:57,592 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:23:57,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:23:57,592 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:23:57,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:23:57,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:23:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:23:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2020-10-28 10:23:57,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:23:57,730 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] [2020-10-28 10:23:57,730 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:23:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:23:57,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1587494972, now seen corresponding path program 1 times [2020-10-28 10:23:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:23:57,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567014353] [2020-10-28 10:23:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:23:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:23:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:03,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:03,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 812 [2020-10-28 10:24:03,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:24:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5363 [2020-10-28 10:24:03,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:03,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:24:03,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:24:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 803 [2020-10-28 10:24:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:24:05,415 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:24:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:05,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 10:24:05,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:05,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:05,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:24:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:24:06,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567014353] [2020-10-28 10:24:06,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:24:06,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:24:06,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128778252] [2020-10-28 10:24:06,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:24:06,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:06,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:24:06,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:24:06,918 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-28 10:24:07,086 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:24:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:16,892 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-28 10:24:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:24:16,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 796 [2020-10-28 10:24:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:16,933 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:24:16,933 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:24:16,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:24:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:24:17,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-28 10:24:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-28 10:24:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2730 transitions. [2020-10-28 10:24:17,203 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2730 transitions. Word has length 796 [2020-10-28 10:24:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:17,209 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2730 transitions. [2020-10-28 10:24:17,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:24:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2730 transitions. [2020-10-28 10:24:17,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-28 10:24:17,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:17,251 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:24:17,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:24:17,252 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:17,255 INFO L82 PathProgramCache]: Analyzing trace with hash 586609830, now seen corresponding path program 1 times [2020-10-28 10:24:17,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:17,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166861413] [2020-10-28 10:24:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:22,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:22,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-28 10:24:22,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:24:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 10:24:22,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:22,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:24:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:24:22,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:24:22,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:22,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:22,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:24:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:22,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:24:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:24:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:22,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:22,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:22,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:24:22,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:24:22,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:22,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:22,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:24:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:23,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:24:23,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166861413] [2020-10-28 10:24:23,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:24:23,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:24:23,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937406937] [2020-10-28 10:24:23,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:24:23,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:24:23,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:24:23,559 INFO L87 Difference]: Start difference. First operand 1690 states and 2730 transitions. Second operand 8 states. [2020-10-28 10:24:36,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:36,426 INFO L93 Difference]: Finished difference Result 5195 states and 8409 transitions. [2020-10-28 10:24:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:24:36,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 804 [2020-10-28 10:24:36,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:36,450 INFO L225 Difference]: With dead ends: 5195 [2020-10-28 10:24:36,450 INFO L226 Difference]: Without dead ends: 3511 [2020-10-28 10:24:36,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:24:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2020-10-28 10:24:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3465. [2020-10-28 10:24:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2020-10-28 10:24:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 5083 transitions. [2020-10-28 10:24:36,657 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 5083 transitions. Word has length 804 [2020-10-28 10:24:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:36,657 INFO L481 AbstractCegarLoop]: Abstraction has 3465 states and 5083 transitions. [2020-10-28 10:24:36,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:24:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 5083 transitions. [2020-10-28 10:24:36,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-10-28 10:24:36,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:36,675 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] [2020-10-28 10:24:36,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:24:36,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash -441808510, now seen corresponding path program 1 times [2020-10-28 10:24:36,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:36,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281052533] [2020-10-28 10:24:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:36,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:41,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:41,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-28 10:24:41,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:24:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-28 10:24:41,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:41,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:24:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:24:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:24:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:24:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:24:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:42,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:24:42,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:24:42,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:42,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:42,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:24:42,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:24:42,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:24:42,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:24:42,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:24:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:42,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:24:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:24:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:24:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:24:42,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:24:42,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:24:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:24:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:24:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:24:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:24:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:24:42,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281052533] [2020-10-28 10:24:42,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:24:42,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:24:42,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197469147] [2020-10-28 10:24:42,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:24:42,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:24:42,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:24:42,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:24:42,891 INFO L87 Difference]: Start difference. First operand 3465 states and 5083 transitions. Second operand 7 states. [2020-10-28 10:24:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:24:55,382 INFO L93 Difference]: Finished difference Result 10642 states and 16098 transitions. [2020-10-28 10:24:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:24:55,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 806 [2020-10-28 10:24:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:24:55,429 INFO L225 Difference]: With dead ends: 10642 [2020-10-28 10:24:55,430 INFO L226 Difference]: Without dead ends: 7183 [2020-10-28 10:24:55,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:24:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2020-10-28 10:24:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 7051. [2020-10-28 10:24:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7051 states. [2020-10-28 10:24:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 10186 transitions. [2020-10-28 10:24:55,795 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 10186 transitions. Word has length 806 [2020-10-28 10:24:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:24:55,796 INFO L481 AbstractCegarLoop]: Abstraction has 7051 states and 10186 transitions. [2020-10-28 10:24:55,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:24:55,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 10186 transitions. [2020-10-28 10:24:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-28 10:24:55,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:24:55,832 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:24:55,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:24:55,833 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:24:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:24:55,833 INFO L82 PathProgramCache]: Analyzing trace with hash 125895201, now seen corresponding path program 1 times [2020-10-28 10:24:55,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:24:55,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819171999] [2020-10-28 10:24:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:24:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:24:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:24:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:01,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:01,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-28 10:25:01,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:25:01,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-28 10:25:01,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:01,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:01,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:25:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:25:01,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 10:25:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:25:01,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:01,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:25:01,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:01,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:25:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:25:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:01,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:01,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:25:01,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:25:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:01,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:25:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:25:01,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819171999] [2020-10-28 10:25:01,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:25:01,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:25:01,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868108296] [2020-10-28 10:25:01,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:25:01,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:01,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:25:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:25:01,935 INFO L87 Difference]: Start difference. First operand 7051 states and 10186 transitions. Second operand 7 states. [2020-10-28 10:25:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:25:14,500 INFO L93 Difference]: Finished difference Result 21177 states and 31555 transitions. [2020-10-28 10:25:14,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:25:14,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 809 [2020-10-28 10:25:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:25:14,586 INFO L225 Difference]: With dead ends: 21177 [2020-10-28 10:25:14,586 INFO L226 Difference]: Without dead ends: 14132 [2020-10-28 10:25:14,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:25:14,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14132 states. [2020-10-28 10:25:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14132 to 14029. [2020-10-28 10:25:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14029 states. [2020-10-28 10:25:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14029 states to 14029 states and 18923 transitions. [2020-10-28 10:25:15,030 INFO L78 Accepts]: Start accepts. Automaton has 14029 states and 18923 transitions. Word has length 809 [2020-10-28 10:25:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:25:15,031 INFO L481 AbstractCegarLoop]: Abstraction has 14029 states and 18923 transitions. [2020-10-28 10:25:15,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:25:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 14029 states and 18923 transitions. [2020-10-28 10:25:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-28 10:25:15,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:15,165 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:25:15,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:25:15,166 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash -2043324394, now seen corresponding path program 1 times [2020-10-28 10:25:15,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:15,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214404477] [2020-10-28 10:25:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:20,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 830 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 10:25:20,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:20,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:25:20,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:20,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:25:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:20,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:25:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:20,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:25:20,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:25:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:20,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:25:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:25:20,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214404477] [2020-10-28 10:25:20,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:25:20,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:25:20,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346801164] [2020-10-28 10:25:20,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:25:20,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:20,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:25:20,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:25:20,921 INFO L87 Difference]: Start difference. First operand 14029 states and 18923 transitions. Second operand 8 states. [2020-10-28 10:25:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:25:32,733 INFO L93 Difference]: Finished difference Result 35225 states and 48735 transitions. [2020-10-28 10:25:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:25:32,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 812 [2020-10-28 10:25:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:25:32,827 INFO L225 Difference]: With dead ends: 35225 [2020-10-28 10:25:32,827 INFO L226 Difference]: Without dead ends: 21202 [2020-10-28 10:25:32,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:25:32,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21202 states. [2020-10-28 10:25:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21202 to 21099. [2020-10-28 10:25:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21099 states. [2020-10-28 10:25:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21099 states to 21099 states and 27406 transitions. [2020-10-28 10:25:33,633 INFO L78 Accepts]: Start accepts. Automaton has 21099 states and 27406 transitions. Word has length 812 [2020-10-28 10:25:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:25:33,633 INFO L481 AbstractCegarLoop]: Abstraction has 21099 states and 27406 transitions. [2020-10-28 10:25:33,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:25:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 21099 states and 27406 transitions. [2020-10-28 10:25:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-28 10:25:33,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:33,705 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:25:33,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:25:33,706 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:33,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2093123929, now seen corresponding path program 1 times [2020-10-28 10:25:33,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:33,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523036807] [2020-10-28 10:25:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:38,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-28 10:25:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:25:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 10:25:38,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:38,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:25:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:25:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:25:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:25:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:39,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:25:39,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:25:39,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:25:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:25:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:39,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:39,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:25:39,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:25:39,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:25:39,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:25:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:25:39,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523036807] [2020-10-28 10:25:39,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:25:39,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:25:39,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912542968] [2020-10-28 10:25:39,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:25:39,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:25:39,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:25:39,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:25:39,508 INFO L87 Difference]: Start difference. First operand 21099 states and 27406 transitions. Second operand 8 states. [2020-10-28 10:25:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:25:57,449 INFO L93 Difference]: Finished difference Result 55127 states and 75840 transitions. [2020-10-28 10:25:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:25:57,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 813 [2020-10-28 10:25:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:25:57,557 INFO L225 Difference]: With dead ends: 55127 [2020-10-28 10:25:57,557 INFO L226 Difference]: Without dead ends: 34034 [2020-10-28 10:25:57,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:25:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34034 states. [2020-10-28 10:25:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34034 to 33969. [2020-10-28 10:25:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33969 states. [2020-10-28 10:25:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33969 states to 33969 states and 44131 transitions. [2020-10-28 10:25:58,481 INFO L78 Accepts]: Start accepts. Automaton has 33969 states and 44131 transitions. Word has length 813 [2020-10-28 10:25:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:25:58,482 INFO L481 AbstractCegarLoop]: Abstraction has 33969 states and 44131 transitions. [2020-10-28 10:25:58,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:25:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 33969 states and 44131 transitions. [2020-10-28 10:25:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-28 10:25:58,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:25:58,574 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:25:58,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:25:58,575 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:25:58,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:25:58,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1874704572, now seen corresponding path program 1 times [2020-10-28 10:25:58,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:25:58,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078142846] [2020-10-28 10:25:58,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:25:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:25:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:25:59,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:04,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:04,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-28 10:26:04,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:26:04,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 10:26:04,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:04,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:04,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:26:04,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:26:04,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:04,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:04,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:26:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:04,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:26:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:26:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:04,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:04,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:26:04,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:26:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:04,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:26:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:26:04,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078142846] [2020-10-28 10:26:04,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:26:04,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:26:04,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774774173] [2020-10-28 10:26:04,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:04,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:04,749 INFO L87 Difference]: Start difference. First operand 33969 states and 44131 transitions. Second operand 7 states. [2020-10-28 10:26:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:16,174 INFO L93 Difference]: Finished difference Result 79130 states and 102808 transitions. [2020-10-28 10:26:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:26:16,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-28 10:26:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:16,354 INFO L225 Difference]: With dead ends: 79130 [2020-10-28 10:26:16,354 INFO L226 Difference]: Without dead ends: 45167 [2020-10-28 10:26:16,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:26:16,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45167 states. [2020-10-28 10:26:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45167 to 43334. [2020-10-28 10:26:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43334 states. [2020-10-28 10:26:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43334 states to 43334 states and 55001 transitions. [2020-10-28 10:26:17,434 INFO L78 Accepts]: Start accepts. Automaton has 43334 states and 55001 transitions. Word has length 830 [2020-10-28 10:26:17,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:17,434 INFO L481 AbstractCegarLoop]: Abstraction has 43334 states and 55001 transitions. [2020-10-28 10:26:17,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 43334 states and 55001 transitions. [2020-10-28 10:26:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-10-28 10:26:17,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:17,497 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 10:26:17,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:26:17,498 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1385752648, now seen corresponding path program 1 times [2020-10-28 10:26:17,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:17,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970687012] [2020-10-28 10:26:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:22,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 10:26:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:26:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 800 [2020-10-28 10:26:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:23,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:23,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:23,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:23,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:23,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:26:23,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:23,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:26:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:26:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:26:23,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:23,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:23,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:26:23,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:23,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:26:23,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:23,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:26:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:26:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:26:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:26:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:23,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:23,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:26:23,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:23,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:26:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:23,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:26:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:26:24,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970687012] [2020-10-28 10:26:24,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:26:24,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:26:24,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642000542] [2020-10-28 10:26:24,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:26:24,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:24,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:26:24,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:26:24,028 INFO L87 Difference]: Start difference. First operand 43334 states and 55001 transitions. Second operand 5 states. [2020-10-28 10:26:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:34,925 INFO L93 Difference]: Finished difference Result 88337 states and 111896 transitions. [2020-10-28 10:26:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:26:34,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 832 [2020-10-28 10:26:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:35,062 INFO L225 Difference]: With dead ends: 88337 [2020-10-28 10:26:35,062 INFO L226 Difference]: Without dead ends: 44170 [2020-10-28 10:26:35,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:26:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44170 states. [2020-10-28 10:26:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44170 to 44163. [2020-10-28 10:26:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44163 states. [2020-10-28 10:26:36,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44163 states to 44163 states and 53867 transitions. [2020-10-28 10:26:36,264 INFO L78 Accepts]: Start accepts. Automaton has 44163 states and 53867 transitions. Word has length 832 [2020-10-28 10:26:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:36,265 INFO L481 AbstractCegarLoop]: Abstraction has 44163 states and 53867 transitions. [2020-10-28 10:26:36,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:26:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 44163 states and 53867 transitions. [2020-10-28 10:26:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2020-10-28 10:26:36,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:36,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:36,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:26:36,332 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2130925205, now seen corresponding path program 1 times [2020-10-28 10:26:36,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:36,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398218413] [2020-10-28 10:26:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:41,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:41,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-28 10:26:41,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:26:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 10:26:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:41,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:26:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 10:26:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:41,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:41,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:41,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:26:41,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:41,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:26:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:26:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:41,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:26:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:41,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:26:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:26:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:41,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:26:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:42,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:42,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:26:42,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:42,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 10:26:42,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:42,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:42,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:26:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 170 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 10:26:42,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398218413] [2020-10-28 10:26:42,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:26:42,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:26:42,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176984299] [2020-10-28 10:26:42,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:42,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:42,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:42,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:42,682 INFO L87 Difference]: Start difference. First operand 44163 states and 53867 transitions. Second operand 7 states. [2020-10-28 10:26:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:54,038 INFO L93 Difference]: Finished difference Result 103687 states and 129480 transitions. [2020-10-28 10:26:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:26:54,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 945 [2020-10-28 10:26:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:54,183 INFO L225 Difference]: With dead ends: 103687 [2020-10-28 10:26:54,184 INFO L226 Difference]: Without dead ends: 60364 [2020-10-28 10:26:54,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:26:54,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60364 states. [2020-10-28 10:26:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60364 to 60294. [2020-10-28 10:26:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60294 states. [2020-10-28 10:26:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60294 states to 60294 states and 72771 transitions. [2020-10-28 10:26:55,473 INFO L78 Accepts]: Start accepts. Automaton has 60294 states and 72771 transitions. Word has length 945 [2020-10-28 10:26:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:55,474 INFO L481 AbstractCegarLoop]: Abstraction has 60294 states and 72771 transitions. [2020-10-28 10:26:55,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 60294 states and 72771 transitions. [2020-10-28 10:26:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2020-10-28 10:26:55,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:55,532 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:26:55,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:26:55,533 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash 669273221, now seen corresponding path program 1 times [2020-10-28 10:26:55,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:55,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660177200] [2020-10-28 10:26:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:59,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1023 [2020-10-28 10:27:00,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:27:00,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 10:27:00,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:27:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:27:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 10:27:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:00,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:27:00,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:27:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:27:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:01,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:01,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:27:01,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:27:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 10:27:01,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:01,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 10:27:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:01,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 10:27:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 10:27:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 294 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 10:27:02,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660177200] [2020-10-28 10:27:02,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:02,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:27:02,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628147651] [2020-10-28 10:27:02,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:27:02,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:02,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:27:02,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:27:02,098 INFO L87 Difference]: Start difference. First operand 60294 states and 72771 transitions. Second operand 8 states. [2020-10-28 10:27:19,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:19,720 INFO L93 Difference]: Finished difference Result 126991 states and 153462 transitions. [2020-10-28 10:27:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:27:19,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1001 [2020-10-28 10:27:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:19,856 INFO L225 Difference]: With dead ends: 126991 [2020-10-28 10:27:19,856 INFO L226 Difference]: Without dead ends: 67537 [2020-10-28 10:27:19,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:27:19,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67537 states.