/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/Problem18_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:53:51,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:53:51,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:53:51,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:53:51,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:53:51,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:53:51,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:53:51,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:53:51,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:53:51,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:53:51,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:53:51,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:53:51,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:53:51,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:53:51,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:53:51,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:53:51,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:53:51,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:53:51,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:53:51,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:53:51,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:53:51,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:53:51,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:53:51,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:53:51,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:53:51,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:53:51,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:53:51,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:53:51,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:53:51,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:53:51,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:53:51,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:53:51,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:53:51,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:53:51,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:53:51,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:53:51,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:53:51,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:53:51,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:53:51,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:53:51,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:53:51,392 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 13:53:51,445 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:53:51,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:53:51,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:53:51,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:53:51,450 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:53:51,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:53:51,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:53:51,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:53:51,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:53:51,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:53:51,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:53:51,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:53:51,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:53:51,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:53:51,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:53:51,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:53:51,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:53:51,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:53:51,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:53:51,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:53:51,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:53:51,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:53:51,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:53:51,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:53:51,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:53:51,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:53:51,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:53:51,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:53:51,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:53:51,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:53:51,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:53:51,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:53:51,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:53:51,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:53:51,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:53:51,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30.c [2020-10-28 13:53:51,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad0750b50/8636156f8d2141ed994e19d5a4415990/FLAG10b6dd9b0 [2020-10-28 13:53:52,999 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:53:53,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label30.c [2020-10-28 13:53:53,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad0750b50/8636156f8d2141ed994e19d5a4415990/FLAG10b6dd9b0 [2020-10-28 13:53:53,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad0750b50/8636156f8d2141ed994e19d5a4415990 [2020-10-28 13:53:53,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:53:53,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:53:53,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:53:53,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:53:53,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:53:53,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:53:53" (1/1) ... [2020-10-28 13:53:53,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4e8fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:53, skipping insertion in model container [2020-10-28 13:53:53,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:53:53" (1/1) ... [2020-10-28 13:53:53,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:53:53,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:53:54,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:53:54,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:53:55,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:53:55,356 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:53:55,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55 WrapperNode [2020-10-28 13:53:55,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:53:55,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:53:55,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:53:55,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:53:55,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (1/1) ... [2020-10-28 13:53:55,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:53:55,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:53:55,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:53:55,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:53:55,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (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 13:53:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:53:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:53:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:53:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:53:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:53:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:53:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:53:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:53:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:53:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:53:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:53:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:53:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:53:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:53:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:53:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:53:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:53:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:53:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:53:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:53:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:53:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:53:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:54:00,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:54:00,842 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:54:00,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:54:00 BoogieIcfgContainer [2020-10-28 13:54:00,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:54:00,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:54:00,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:54:00,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:54:00,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:53:53" (1/3) ... [2020-10-28 13:54:00,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2747af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:54:00, skipping insertion in model container [2020-10-28 13:54:00,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:53:55" (2/3) ... [2020-10-28 13:54:00,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2747af3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:54:00, skipping insertion in model container [2020-10-28 13:54:00,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:54:00" (3/3) ... [2020-10-28 13:54:00,855 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label30.c [2020-10-28 13:54:00,867 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:54:00,872 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:54:00,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:54:00,922 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:54:00,922 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:54:00,922 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:54:00,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:54:00,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:54:00,923 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:54:00,923 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:54:00,923 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:54:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:54:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 13:54:00,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:00,964 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] [2020-10-28 13:54:00,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:00,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:00,971 INFO L82 PathProgramCache]: Analyzing trace with hash 791525200, now seen corresponding path program 1 times [2020-10-28 13:54:00,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:00,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892804479] [2020-10-28 13:54:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:01,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 13:54:01,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-28 13:54:01,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:01,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:54:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:54:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 13:54:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:54:01,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:01,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:01,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:54:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:01,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:54:01,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:54:01,951 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 13:54:01,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892804479] [2020-10-28 13:54:01,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:54:01,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:54:01,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172703930] [2020-10-28 13:54:01,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:54:01,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:01,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:54:01,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:54:01,989 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:54:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:11,670 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 13:54:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:54:11,672 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 13:54:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:11,705 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:54:11,705 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:54:11,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:54:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:54:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 13:54:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 13:54:11,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-28 13:54:11,879 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 50 [2020-10-28 13:54:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:11,881 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-28 13:54:11,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:54:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-28 13:54:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 13:54:11,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:11,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:11,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:54:11,899 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash -2083466408, now seen corresponding path program 1 times [2020-10-28 13:54:11,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:11,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133480764] [2020-10-28 13:54:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:12,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:12,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 13:54:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:54:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-28 13:54:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:12,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:54:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:54:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:54:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:54:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:13,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:54:13,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:54:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:54:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:13,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:13,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:54:13,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:54:13,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:13,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:13,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:54:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:54:13,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133480764] [2020-10-28 13:54:13,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:54:13,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:54:13,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270039511] [2020-10-28 13:54:13,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:13,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:13,438 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-28 13:54:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:24,852 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-28 13:54:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:24,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-28 13:54:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:24,873 INFO L225 Difference]: With dead ends: 4354 [2020-10-28 13:54:24,874 INFO L226 Difference]: Without dead ends: 2934 [2020-10-28 13:54:24,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-28 13:54:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-28 13:54:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-28 13:54:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-28 13:54:24,975 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 120 [2020-10-28 13:54:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:24,975 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-28 13:54:24,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:24,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-28 13:54:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 13:54:24,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:24,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:24,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:54:24,979 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:24,980 INFO L82 PathProgramCache]: Analyzing trace with hash -307913552, now seen corresponding path program 1 times [2020-10-28 13:54:24,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:24,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198768201] [2020-10-28 13:54:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 13:54:26,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:54:26,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-28 13:54:26,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:54:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:54:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:54:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:26,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:54:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:26,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:54:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:26,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:26,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:54:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:54:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:54:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:54:26,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198768201] [2020-10-28 13:54:26,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:54:26,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:54:26,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175091447] [2020-10-28 13:54:26,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:26,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:26,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:26,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:26,492 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-28 13:54:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:38,451 INFO L93 Difference]: Finished difference Result 8802 states and 12016 transitions. [2020-10-28 13:54:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:54:38,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-28 13:54:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:38,489 INFO L225 Difference]: With dead ends: 8802 [2020-10-28 13:54:38,489 INFO L226 Difference]: Without dead ends: 5929 [2020-10-28 13:54:38,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-28 13:54:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5842. [2020-10-28 13:54:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2020-10-28 13:54:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 7282 transitions. [2020-10-28 13:54:38,666 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 7282 transitions. Word has length 140 [2020-10-28 13:54:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:38,667 INFO L481 AbstractCegarLoop]: Abstraction has 5842 states and 7282 transitions. [2020-10-28 13:54:38,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 7282 transitions. [2020-10-28 13:54:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-28 13:54:38,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:38,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:38,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:54:38,673 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:38,674 INFO L82 PathProgramCache]: Analyzing trace with hash -132442458, now seen corresponding path program 1 times [2020-10-28 13:54:38,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:38,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125826894] [2020-10-28 13:54:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:42,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 13:54:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3563 [2020-10-28 13:54:42,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:42,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:54:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:54:42,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:54:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:42,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:42,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:42,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:42,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:54:42,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:42,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:42,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:54:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:42,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:42,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:54:42,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:54:42,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:42,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:42,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:42,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:54:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:54:42,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:54:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:54:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:54:42,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:42,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:54:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:54:43,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125826894] [2020-10-28 13:54:43,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:43,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:43,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207827592] [2020-10-28 13:54:43,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:43,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:43,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:43,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:43,159 INFO L87 Difference]: Start difference. First operand 5842 states and 7282 transitions. Second operand 7 states. [2020-10-28 13:54:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:53,778 INFO L93 Difference]: Finished difference Result 14797 states and 18182 transitions. [2020-10-28 13:54:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:54:53,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-28 13:54:53,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:53,829 INFO L225 Difference]: With dead ends: 14797 [2020-10-28 13:54:53,829 INFO L226 Difference]: Without dead ends: 8961 [2020-10-28 13:54:53,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:54:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8961 states. [2020-10-28 13:54:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8961 to 8096. [2020-10-28 13:54:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8096 states. [2020-10-28 13:54:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8096 states to 8096 states and 9834 transitions. [2020-10-28 13:54:54,073 INFO L78 Accepts]: Start accepts. Automaton has 8096 states and 9834 transitions. Word has length 245 [2020-10-28 13:54:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:54,074 INFO L481 AbstractCegarLoop]: Abstraction has 8096 states and 9834 transitions. [2020-10-28 13:54:54,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8096 states and 9834 transitions. [2020-10-28 13:54:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-28 13:54:54,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:54,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:54:54,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:54:54,085 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:54,086 INFO L82 PathProgramCache]: Analyzing trace with hash -629291968, now seen corresponding path program 1 times [2020-10-28 13:54:54,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:54,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785764209] [2020-10-28 13:54:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:59,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-28 13:54:59,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 13:54:59,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:59,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:54:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:54:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:59,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:59,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:59,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:59,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:54:59,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:59,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:59,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:59,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:59,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:59,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-28 13:54:59,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:59,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:59,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:59,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:54:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:54:59,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:54:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:59,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:54:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:55:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:00,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:55:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:00,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:55:00,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:00,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:55:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:55:00,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785764209] [2020-10-28 13:55:00,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:00,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:00,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522907151] [2020-10-28 13:55:00,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:00,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:00,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:00,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:00,658 INFO L87 Difference]: Start difference. First operand 8096 states and 9834 transitions. Second operand 7 states. [2020-10-28 13:55:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:13,781 INFO L93 Difference]: Finished difference Result 19253 states and 24112 transitions. [2020-10-28 13:55:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:55:13,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-28 13:55:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:13,832 INFO L225 Difference]: With dead ends: 19253 [2020-10-28 13:55:13,833 INFO L226 Difference]: Without dead ends: 11163 [2020-10-28 13:55:13,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2020-10-28 13:55:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 11074. [2020-10-28 13:55:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11074 states. [2020-10-28 13:55:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11074 states to 11074 states and 13639 transitions. [2020-10-28 13:55:14,162 INFO L78 Accepts]: Start accepts. Automaton has 11074 states and 13639 transitions. Word has length 447 [2020-10-28 13:55:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:14,164 INFO L481 AbstractCegarLoop]: Abstraction has 11074 states and 13639 transitions. [2020-10-28 13:55:14,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11074 states and 13639 transitions. [2020-10-28 13:55:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-28 13:55:14,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:14,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:14,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:55:14,182 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:14,183 INFO L82 PathProgramCache]: Analyzing trace with hash 577899850, now seen corresponding path program 1 times [2020-10-28 13:55:14,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:14,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569727108] [2020-10-28 13:55:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:19,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:19,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-28 13:55:19,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:55:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 13:55:19,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:19,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:19,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:55:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:55:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:19,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:19,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:19,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:19,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:55:19,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:19,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:19,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:19,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:55:19,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:19,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:55:19,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:19,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:19,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:19,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:19,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:55:19,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:55:19,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:19,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:19,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:55:19,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:55:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:20,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:55:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:55:20,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:20,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:20,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:55:20,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:55:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:55:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:20,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:20,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:20,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:55:20,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:55:20,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:20,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:55:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:55:20,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569727108] [2020-10-28 13:55:20,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:20,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:20,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041312712] [2020-10-28 13:55:20,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:20,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:20,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:20,665 INFO L87 Difference]: Start difference. First operand 11074 states and 13639 transitions. Second operand 7 states. [2020-10-28 13:55:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:34,765 INFO L93 Difference]: Finished difference Result 25393 states and 32675 transitions. [2020-10-28 13:55:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:55:34,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 530 [2020-10-28 13:55:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:34,832 INFO L225 Difference]: With dead ends: 25393 [2020-10-28 13:55:34,833 INFO L226 Difference]: Without dead ends: 14325 [2020-10-28 13:55:34,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:55:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14325 states. [2020-10-28 13:55:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14325 to 14007. [2020-10-28 13:55:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14007 states. [2020-10-28 13:55:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14007 states to 14007 states and 16952 transitions. [2020-10-28 13:55:35,247 INFO L78 Accepts]: Start accepts. Automaton has 14007 states and 16952 transitions. Word has length 530 [2020-10-28 13:55:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:35,248 INFO L481 AbstractCegarLoop]: Abstraction has 14007 states and 16952 transitions. [2020-10-28 13:55:35,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 14007 states and 16952 transitions. [2020-10-28 13:55:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-28 13:55:35,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:35,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:55:35,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:55:35,266 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:35,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1074904942, now seen corresponding path program 1 times [2020-10-28 13:55:35,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:35,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113014794] [2020-10-28 13:55:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 562 [2020-10-28 13:55:40,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:55:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-28 13:55:40,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:55:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:55:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:55:40,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:40,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:55:40,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:55:40,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:40,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:55:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:55:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:55:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:41,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:41,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:55:41,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:41,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:55:41,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:41,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:41,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:55:41,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:41,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:55:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:41,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:41,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:55:41,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 13:55:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:41,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:55:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:55:41,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113014794] [2020-10-28 13:55:41,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:41,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:41,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363396537] [2020-10-28 13:55:41,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:41,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:41,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:41,654 INFO L87 Difference]: Start difference. First operand 14007 states and 16952 transitions. Second operand 7 states. [2020-10-28 13:55:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:55,865 INFO L93 Difference]: Finished difference Result 32534 states and 40218 transitions. [2020-10-28 13:55:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:55:55,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-28 13:55:55,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:56,027 INFO L225 Difference]: With dead ends: 32534 [2020-10-28 13:55:56,028 INFO L226 Difference]: Without dead ends: 18533 [2020-10-28 13:55:56,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:55:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18533 states. [2020-10-28 13:55:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18533 to 18369. [2020-10-28 13:55:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18369 states. [2020-10-28 13:55:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18369 states to 18369 states and 21896 transitions. [2020-10-28 13:55:56,470 INFO L78 Accepts]: Start accepts. Automaton has 18369 states and 21896 transitions. Word has length 544 [2020-10-28 13:55:56,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:56,472 INFO L481 AbstractCegarLoop]: Abstraction has 18369 states and 21896 transitions. [2020-10-28 13:55:56,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 18369 states and 21896 transitions. [2020-10-28 13:55:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-28 13:55:56,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:56,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:55:56,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:55:56,490 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:56,491 INFO L82 PathProgramCache]: Analyzing trace with hash -667482940, now seen corresponding path program 1 times [2020-10-28 13:55:56,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:56,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058297401] [2020-10-28 13:55:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:01,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-28 13:56:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:56:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 13:56:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:56:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:56:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:56:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:01,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:01,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:01,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:01,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:02,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:02,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:56:02,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-28 13:56:02,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:02,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:56:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:56:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:02,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:56:02,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:56:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:02,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:56:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:56:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:02,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:02,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:02,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:56:02,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:02,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:56:02,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:02,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:02,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:56:02,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:56:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:02,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:02,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:56:02,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:56:02,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:02,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:02,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:56:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 203 proven. 75 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 13:56:02,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058297401] [2020-10-28 13:56:02,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:02,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:56:02,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574319709] [2020-10-28 13:56:02,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:56:02,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:02,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:56:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:56:02,928 INFO L87 Difference]: Start difference. First operand 18369 states and 21896 transitions. Second operand 8 states. [2020-10-28 13:56:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:18,265 INFO L93 Difference]: Finished difference Result 48739 states and 60098 transitions. [2020-10-28 13:56:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:18,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 551 [2020-10-28 13:56:18,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:18,372 INFO L225 Difference]: With dead ends: 48739 [2020-10-28 13:56:18,372 INFO L226 Difference]: Without dead ends: 30376 [2020-10-28 13:56:18,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:56:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30376 states. [2020-10-28 13:56:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30376 to 30223. [2020-10-28 13:56:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30223 states. [2020-10-28 13:56:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30223 states to 30223 states and 37151 transitions. [2020-10-28 13:56:19,120 INFO L78 Accepts]: Start accepts. Automaton has 30223 states and 37151 transitions. Word has length 551 [2020-10-28 13:56:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:19,121 INFO L481 AbstractCegarLoop]: Abstraction has 30223 states and 37151 transitions. [2020-10-28 13:56:19,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:56:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 30223 states and 37151 transitions. [2020-10-28 13:56:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-28 13:56:19,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:19,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:56:19,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:56:19,131 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:19,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1092604084, now seen corresponding path program 1 times [2020-10-28 13:56:19,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:19,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919719354] [2020-10-28 13:56:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:24,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:24,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-28 13:56:24,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:56:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 13:56:24,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:24,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:56:24,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:56:24,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:24,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:24,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:24,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:56:24,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:24,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:24,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:24,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:56:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:24,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:56:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:25,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:25,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:56:25,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:56:25,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:25,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:25,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:56:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:56:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:25,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:56:25,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:56:25,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:25,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:56:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:25,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:56:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:25,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:25,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:56:25,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:56:25,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:25,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 13:56:25,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:25,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 249 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 13:56:25,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919719354] [2020-10-28 13:56:25,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:25,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:25,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801722881] [2020-10-28 13:56:25,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:25,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:25,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:25,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:25,592 INFO L87 Difference]: Start difference. First operand 30223 states and 37151 transitions. Second operand 7 states. [2020-10-28 13:56:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:38,987 INFO L93 Difference]: Finished difference Result 65300 states and 83470 transitions. [2020-10-28 13:56:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:38,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 559 [2020-10-28 13:56:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:39,127 INFO L225 Difference]: With dead ends: 65300 [2020-10-28 13:56:39,127 INFO L226 Difference]: Without dead ends: 35083 [2020-10-28 13:56:39,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:56:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35083 states. [2020-10-28 13:56:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35083 to 33874. [2020-10-28 13:56:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33874 states. [2020-10-28 13:56:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33874 states to 33874 states and 41257 transitions. [2020-10-28 13:56:40,238 INFO L78 Accepts]: Start accepts. Automaton has 33874 states and 41257 transitions. Word has length 559 [2020-10-28 13:56:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:40,239 INFO L481 AbstractCegarLoop]: Abstraction has 33874 states and 41257 transitions. [2020-10-28 13:56:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 33874 states and 41257 transitions. [2020-10-28 13:56:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-28 13:56:40,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:40,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:56:40,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:56:40,250 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -911092459, now seen corresponding path program 1 times [2020-10-28 13:56:40,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:40,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529223725] [2020-10-28 13:56:40,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:45,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:45,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-28 13:56:45,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:56:45,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:56:45,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:45,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 13:56:45,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:56:45,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:45,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:45,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:45,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:45,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:45,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:45,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:56:45,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:45,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:45,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:45,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:45,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:45,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:45,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:56:45,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:56:45,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:45,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 13:56:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:56:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:56:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:56:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:46,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:56:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:56:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:46,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:46,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:56:46,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:56:46,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:46,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:46,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:56:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:46,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 13:56:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:46,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:46,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:56:46,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:56:46,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:46,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 13:56:46,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:46,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 249 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 13:56:46,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529223725] [2020-10-28 13:56:46,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:46,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:46,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042106060] [2020-10-28 13:56:46,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:46,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:46,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:46,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:46,693 INFO L87 Difference]: Start difference. First operand 33874 states and 41257 transitions. Second operand 7 states. [2020-10-28 13:57:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:01,313 INFO L93 Difference]: Finished difference Result 71162 states and 89665 transitions. [2020-10-28 13:57:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:57:01,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-28 13:57:01,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:01,566 INFO L225 Difference]: With dead ends: 71162 [2020-10-28 13:57:01,567 INFO L226 Difference]: Without dead ends: 37294 [2020-10-28 13:57:01,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:57:01,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37294 states. [2020-10-28 13:57:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37294 to 36806. [2020-10-28 13:57:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36806 states. [2020-10-28 13:57:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36806 states to 36806 states and 44578 transitions. [2020-10-28 13:57:02,482 INFO L78 Accepts]: Start accepts. Automaton has 36806 states and 44578 transitions. Word has length 566 [2020-10-28 13:57:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:02,483 INFO L481 AbstractCegarLoop]: Abstraction has 36806 states and 44578 transitions. [2020-10-28 13:57:02,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 36806 states and 44578 transitions. [2020-10-28 13:57:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2020-10-28 13:57:02,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:02,499 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:57:02,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:57:02,499 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:02,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:02,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1896958620, now seen corresponding path program 1 times [2020-10-28 13:57:02,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:02,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320580639] [2020-10-28 13:57:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:07,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:57:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:57:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-28 13:57:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:07,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:07,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:07,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:07,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:57:07,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:07,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:07,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:07,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:57:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:08,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:57:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-28 13:57:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:08,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:08,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:08,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:08,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:57:08,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-28 13:57:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:08,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 141 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:08,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2020-10-28 13:57:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:08,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:08,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:57:08,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:08,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 359 proven. 236 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-28 13:57:09,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320580639] [2020-10-28 13:57:09,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:09,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:57:09,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753543603] [2020-10-28 13:57:09,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:57:09,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:09,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:57:09,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:57:09,305 INFO L87 Difference]: Start difference. First operand 36806 states and 44578 transitions. Second operand 8 states.