/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/Problem12_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:27:38,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:27:38,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:27:38,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:27:38,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:27:38,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:27:38,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:27:38,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:27:38,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:27:38,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:27:38,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:27:38,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:27:38,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:27:38,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:27:38,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:27:38,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:27:38,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:27:38,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:27:38,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:27:38,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:27:38,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:27:38,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:27:38,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:27:38,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:27:38,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:27:38,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:27:38,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:27:38,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:27:38,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:27:38,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:27:38,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:27:38,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:27:38,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:27:38,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:27:38,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:27:38,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:27:38,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:27:38,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:27:38,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:27:38,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:27:38,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:27:38,504 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 12:27:38,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:27:38,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:27:38,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:27:38,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:27:38,566 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:27:38,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:27:38,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:27:38,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:27:38,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:27:38,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:27:38,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:27:38,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:27:38,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:27:38,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:27:38,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:27:38,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:27:38,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:27:38,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:27:38,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:27:38,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:27:38,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:27:38,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:27:38,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:27:38,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:27:38,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:27:38,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:27:38,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:27:38,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:27:38,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:27:38,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:27:39,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:27:39,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:27:39,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:27:39,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:27:39,119 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:27:39,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2020-10-28 12:27:39,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51f9142c/52f9d2f57575431db0c1cf6f7b039d9c/FLAG5c075ff53 [2020-10-28 12:27:40,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:27:40,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label56.c [2020-10-28 12:27:40,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51f9142c/52f9d2f57575431db0c1cf6f7b039d9c/FLAG5c075ff53 [2020-10-28 12:27:40,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51f9142c/52f9d2f57575431db0c1cf6f7b039d9c [2020-10-28 12:27:40,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:27:40,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:27:40,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:27:40,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:27:40,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:27:40,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:27:40" (1/1) ... [2020-10-28 12:27:40,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e03b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:40, skipping insertion in model container [2020-10-28 12:27:40,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:27:40" (1/1) ... [2020-10-28 12:27:40,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:27:40,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:27:42,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:27:42,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:27:43,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:27:43,411 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:27:43,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43 WrapperNode [2020-10-28 12:27:43,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:27:43,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:27:43,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:27:43,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:27:43,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (1/1) ... [2020-10-28 12:27:43,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:27:43,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:27:43,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:27:43,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:27:43,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (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 12:27:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:27:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:27:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:27:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:27:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:27:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:27:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:27:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:27:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:27:43,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:27:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:27:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:27:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:27:43,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:27:43,917 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:27:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:27:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:27:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:27:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:27:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:27:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:27:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:27:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:27:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:27:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:27:50,485 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:27:50,488 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:27:50,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:27:50 BoogieIcfgContainer [2020-10-28 12:27:50,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:27:50,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:27:50,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:27:50,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:27:50,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:27:40" (1/3) ... [2020-10-28 12:27:50,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f6cc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:27:50, skipping insertion in model container [2020-10-28 12:27:50,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:43" (2/3) ... [2020-10-28 12:27:50,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f6cc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:27:50, skipping insertion in model container [2020-10-28 12:27:50,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:27:50" (3/3) ... [2020-10-28 12:27:50,510 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label56.c [2020-10-28 12:27:50,525 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:27:50,532 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:27:50,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:27:50,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:27:50,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:27:50,602 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:27:50,603 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:27:50,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:27:50,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:27:50,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:27:50,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:27:50,658 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:27:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 12:27:50,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:50,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:27:50,682 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1171084524, now seen corresponding path program 1 times [2020-10-28 12:27:50,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:50,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426578718] [2020-10-28 12:27:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:27:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-28 12:27:51,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:51,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:51,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:27:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:27:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:52,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:52,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:52,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:27:52,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:52,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:52,079 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 12:27:52,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426578718] [2020-10-28 12:27:52,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:27:52,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:27:52,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888973839] [2020-10-28 12:27:52,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:27:52,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:27:52,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:27:52,118 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-28 12:28:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:10,063 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-28 12:28:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:28:10,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-28 12:28:10,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:10,108 INFO L225 Difference]: With dead ends: 3258 [2020-10-28 12:28:10,108 INFO L226 Difference]: Without dead ends: 2347 [2020-10-28 12:28:10,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-28 12:28:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-28 12:28:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-28 12:28:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-28 12:28:10,385 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 63 [2020-10-28 12:28:10,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:10,388 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-28 12:28:10,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:28:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-28 12:28:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 12:28:10,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:10,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:10,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:28:10,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:10,406 INFO L82 PathProgramCache]: Analyzing trace with hash 838302473, now seen corresponding path program 1 times [2020-10-28 12:28:10,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:10,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178945297] [2020-10-28 12:28:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:10,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:11,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:12,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:12,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:28:12,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:28:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-28 12:28:12,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:12,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:28:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:28:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:28:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:12,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:13,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:13,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:28:13,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 12:28:13,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:13,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:13,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:13,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:13,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:28:13,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:13,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178945297] [2020-10-28 12:28:13,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:13,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:28:13,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571873040] [2020-10-28 12:28:13,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:13,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:13,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:13,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:13,207 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 7 states. [2020-10-28 12:28:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:29,088 INFO L93 Difference]: Finished difference Result 7166 states and 11942 transitions. [2020-10-28 12:28:29,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:29,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-28 12:28:29,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:29,138 INFO L225 Difference]: With dead ends: 7166 [2020-10-28 12:28:29,138 INFO L226 Difference]: Without dead ends: 4840 [2020-10-28 12:28:29,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2020-10-28 12:28:29,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 4747. [2020-10-28 12:28:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4747 states. [2020-10-28 12:28:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 7426 transitions. [2020-10-28 12:28:29,382 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 7426 transitions. Word has length 141 [2020-10-28 12:28:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:29,386 INFO L481 AbstractCegarLoop]: Abstraction has 4747 states and 7426 transitions. [2020-10-28 12:28:29,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 7426 transitions. [2020-10-28 12:28:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 12:28:29,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:29,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:29,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:28:29,400 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1073420073, now seen corresponding path program 1 times [2020-10-28 12:28:29,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:29,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489361711] [2020-10-28 12:28:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:30,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:30,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 12:28:30,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:30,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1434 [2020-10-28 12:28:30,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:30,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:30,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 12:28:30,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:31,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:31,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:28:31,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:31,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:31,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:31,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:31,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:28:31,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:28:31,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:31,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:28:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:31,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489361711] [2020-10-28 12:28:31,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:31,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:28:31,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38019198] [2020-10-28 12:28:31,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:31,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:31,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:31,452 INFO L87 Difference]: Start difference. First operand 4747 states and 7426 transitions. Second operand 7 states. [2020-10-28 12:28:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:48,520 INFO L93 Difference]: Finished difference Result 14487 states and 23168 transitions. [2020-10-28 12:28:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:28:48,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-28 12:28:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:48,592 INFO L225 Difference]: With dead ends: 14487 [2020-10-28 12:28:48,593 INFO L226 Difference]: Without dead ends: 9746 [2020-10-28 12:28:48,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:28:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2020-10-28 12:28:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 9614. [2020-10-28 12:28:48,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9614 states. [2020-10-28 12:28:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9614 states to 9614 states and 14068 transitions. [2020-10-28 12:28:48,943 INFO L78 Accepts]: Start accepts. Automaton has 9614 states and 14068 transitions. Word has length 157 [2020-10-28 12:28:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:28:48,944 INFO L481 AbstractCegarLoop]: Abstraction has 9614 states and 14068 transitions. [2020-10-28 12:28:48,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:28:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 9614 states and 14068 transitions. [2020-10-28 12:28:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 12:28:48,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:28:48,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:28:48,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:28:48,948 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:28:48,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:28:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -619696251, now seen corresponding path program 1 times [2020-10-28 12:28:48,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:28:48,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157911394] [2020-10-28 12:28:48,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:28:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:49,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:49,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:28:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:28:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-28 12:28:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:50,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:28:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:28:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:28:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:28:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:28:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:28:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:28:50,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:50,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:28:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:28:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:28:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:28:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:28:50,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:28:50,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:28:50,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:28:50,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:28:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 12:28:50,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:28:50,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:28:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:28:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:28:50,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:28:50,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:28:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:28:50,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157911394] [2020-10-28 12:28:50,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:28:50,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:28:50,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744654770] [2020-10-28 12:28:50,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:28:50,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:28:50,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:28:50,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:28:50,772 INFO L87 Difference]: Start difference. First operand 9614 states and 14068 transitions. Second operand 7 states. [2020-10-28 12:28:50,928 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 12:29:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:11,563 INFO L93 Difference]: Finished difference Result 26205 states and 39809 transitions. [2020-10-28 12:29:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:29:11,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-28 12:29:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:11,700 INFO L225 Difference]: With dead ends: 26205 [2020-10-28 12:29:11,700 INFO L226 Difference]: Without dead ends: 16597 [2020-10-28 12:29:11,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:29:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16597 states. [2020-10-28 12:29:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16597 to 16282. [2020-10-28 12:29:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16282 states. [2020-10-28 12:29:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16282 states to 16282 states and 22565 transitions. [2020-10-28 12:29:12,565 INFO L78 Accepts]: Start accepts. Automaton has 16282 states and 22565 transitions. Word has length 166 [2020-10-28 12:29:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:12,568 INFO L481 AbstractCegarLoop]: Abstraction has 16282 states and 22565 transitions. [2020-10-28 12:29:12,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 16282 states and 22565 transitions. [2020-10-28 12:29:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 12:29:12,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:12,576 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:12,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:29:12,576 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:12,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:12,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2128959290, now seen corresponding path program 1 times [2020-10-28 12:29:12,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:12,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052205105] [2020-10-28 12:29:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:14,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:14,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-28 12:29:14,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:29:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-28 12:29:14,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:14,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:29:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:29:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:15,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:15,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:15,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:15,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:15,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:29:15,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:15,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:15,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:15,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:15,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:29:15,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:15,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:29:15,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:15,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:15,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:29:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:29:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:15,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:15,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:15,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 12:29:15,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:15,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 12:29:15,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:15,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:15,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:29:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:29:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:29:16,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052205105] [2020-10-28 12:29:16,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:16,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:29:16,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297381066] [2020-10-28 12:29:16,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:29:16,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:29:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:29:16,046 INFO L87 Difference]: Start difference. First operand 16282 states and 22565 transitions. Second operand 7 states. [2020-10-28 12:29:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:41,017 INFO L93 Difference]: Finished difference Result 44155 states and 64447 transitions. [2020-10-28 12:29:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:29:41,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-28 12:29:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:29:41,129 INFO L225 Difference]: With dead ends: 44155 [2020-10-28 12:29:41,130 INFO L226 Difference]: Without dead ends: 24739 [2020-10-28 12:29:41,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:29:41,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24739 states. [2020-10-28 12:29:42,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24739 to 23666. [2020-10-28 12:29:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23666 states. [2020-10-28 12:29:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23666 states to 23666 states and 31022 transitions. [2020-10-28 12:29:42,182 INFO L78 Accepts]: Start accepts. Automaton has 23666 states and 31022 transitions. Word has length 262 [2020-10-28 12:29:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:29:42,183 INFO L481 AbstractCegarLoop]: Abstraction has 23666 states and 31022 transitions. [2020-10-28 12:29:42,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:29:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 23666 states and 31022 transitions. [2020-10-28 12:29:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-28 12:29:42,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:42,193 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, 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] [2020-10-28 12:29:42,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:29:42,194 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:42,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2075992328, now seen corresponding path program 1 times [2020-10-28 12:29:42,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:42,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865057296] [2020-10-28 12:29:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:42,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:42,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 12:29:42,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-28 12:29:42,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:42,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:29:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 12:29:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 12:29:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:43,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:43,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:43,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:29:43,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:43,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:43,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:29:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:43,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:43,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:29:43,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:29:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:43,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:29:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:29:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:43,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:29:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:43,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:43,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:29:43,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:29:43,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:43,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:29:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:29:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:29:43,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865057296] [2020-10-28 12:29:43,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:29:43,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:29:43,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889771750] [2020-10-28 12:29:43,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:29:43,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:29:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:29:43,643 INFO L87 Difference]: Start difference. First operand 23666 states and 31022 transitions. Second operand 5 states. [2020-10-28 12:29:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:29:59,981 INFO L93 Difference]: Finished difference Result 57598 states and 79144 transitions. [2020-10-28 12:29:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:29:59,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-28 12:29:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:00,114 INFO L225 Difference]: With dead ends: 57598 [2020-10-28 12:30:00,114 INFO L226 Difference]: Without dead ends: 34705 [2020-10-28 12:30:00,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:30:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34705 states. [2020-10-28 12:30:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34705 to 34705. [2020-10-28 12:30:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34705 states. [2020-10-28 12:30:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 46746 transitions. [2020-10-28 12:30:00,972 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 46746 transitions. Word has length 311 [2020-10-28 12:30:00,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:00,973 INFO L481 AbstractCegarLoop]: Abstraction has 34705 states and 46746 transitions. [2020-10-28 12:30:00,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:30:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 46746 transitions. [2020-10-28 12:30:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-28 12:30:00,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:00,985 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:00,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:30:00,985 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:00,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:00,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1893735834, now seen corresponding path program 1 times [2020-10-28 12:30:00,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:00,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044365157] [2020-10-28 12:30:00,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:06,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:06,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-28 12:30:06,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:30:06,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 12:30:06,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:06,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:30:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:30:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 12:30:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:06,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:06,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:06,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:30:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:06,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:06,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:06,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:30:06,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-28 12:30:06,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:06,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 12:30:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:06,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-28 12:30:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:06,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:30:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:06,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 12:30:06,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:06,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:06,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:30:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:30:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 110 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:30:07,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044365157] [2020-10-28 12:30:07,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:07,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:30:07,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134440921] [2020-10-28 12:30:07,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:07,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:07,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:07,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:07,223 INFO L87 Difference]: Start difference. First operand 34705 states and 46746 transitions. Second operand 7 states. [2020-10-28 12:30:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:23,517 INFO L93 Difference]: Finished difference Result 58359 states and 80977 transitions. [2020-10-28 12:30:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:30:23,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 341 [2020-10-28 12:30:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:23,602 INFO L225 Difference]: With dead ends: 58359 [2020-10-28 12:30:23,602 INFO L226 Difference]: Without dead ends: 24427 [2020-10-28 12:30:23,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:30:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24427 states. [2020-10-28 12:30:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24427 to 23258. [2020-10-28 12:30:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23258 states. [2020-10-28 12:30:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23258 states to 23258 states and 28782 transitions. [2020-10-28 12:30:24,289 INFO L78 Accepts]: Start accepts. Automaton has 23258 states and 28782 transitions. Word has length 341 [2020-10-28 12:30:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:24,290 INFO L481 AbstractCegarLoop]: Abstraction has 23258 states and 28782 transitions. [2020-10-28 12:30:24,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:30:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 23258 states and 28782 transitions. [2020-10-28 12:30:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-10-28 12:30:24,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:24,305 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:30:24,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:30:24,305 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:24,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:24,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1877731154, now seen corresponding path program 1 times [2020-10-28 12:30:24,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:24,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082106338] [2020-10-28 12:30:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:24,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:25,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:29,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:29,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-28 12:30:29,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:30:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 12:30:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:29,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:30:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 12:30:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:29,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:29,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:29,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:29,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:30:29,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:29,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:30:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:30:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:29,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:30:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:30:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:29,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:30:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:30:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:30,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:30,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 12:30:30,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-28 12:30:30,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:30,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:30,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 12:30:30,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:30:30,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082106338] [2020-10-28 12:30:30,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:30:30,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:30:30,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216516714] [2020-10-28 12:30:30,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:30,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:30,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:30,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:30,779 INFO L87 Difference]: Start difference. First operand 23258 states and 28782 transitions. Second operand 7 states. [2020-10-28 12:30:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:57,544 INFO L93 Difference]: Finished difference Result 55052 states and 69241 transitions. [2020-10-28 12:30:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:30:57,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 401 [2020-10-28 12:30:57,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:57,654 INFO L225 Difference]: With dead ends: 55052 [2020-10-28 12:30:57,654 INFO L226 Difference]: Without dead ends: 32567 [2020-10-28 12:30:57,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:30:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32567 states. [2020-10-28 12:30:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32567 to 32288. [2020-10-28 12:30:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32288 states. [2020-10-28 12:30:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32288 states to 32288 states and 39337 transitions. [2020-10-28 12:30:58,538 INFO L78 Accepts]: Start accepts. Automaton has 32288 states and 39337 transitions. Word has length 401 [2020-10-28 12:30:58,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:58,539 INFO L481 AbstractCegarLoop]: Abstraction has 32288 states and 39337 transitions. [2020-10-28 12:30:58,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:30:58,539 INFO L276 IsEmpty]: Start isEmpty. Operand 32288 states and 39337 transitions. [2020-10-28 12:30:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-28 12:30:58,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:58,561 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, 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, 3, 3, 3, 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] [2020-10-28 12:30:58,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:30:58,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:58,563 INFO L82 PathProgramCache]: Analyzing trace with hash -170986116, now seen corresponding path program 1 times [2020-10-28 12:30:58,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:58,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140688745] [2020-10-28 12:30:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:58,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:59,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-28 12:31:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:31:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 12:31:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:03,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:31:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:31:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:31:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:03,889 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:31:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:03,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:03,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:03,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:31:03,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:03,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:31:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:31:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:04,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:31:04,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:04,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 12:31:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:31:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:31:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:31:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:31:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:31:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-28 12:31:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:04,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:04,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:31:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:31:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:04,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:31:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 12:31:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:31:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-10-28 12:31:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:04,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 12:31:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:31:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 220 proven. 199 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-28 12:31:05,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140688745] [2020-10-28 12:31:05,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:31:05,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:31:05,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355670751] [2020-10-28 12:31:05,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:05,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:05,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:05,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:05,200 INFO L87 Difference]: Start difference. First operand 32288 states and 39337 transitions. Second operand 7 states. [2020-10-28 12:31:11,179 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 71