/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/Problem19_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:02:43,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:02:43,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:02:43,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:02:43,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:02:43,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:02:43,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:02:43,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:02:43,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:02:43,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:02:43,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:02:43,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:02:43,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:02:43,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:02:43,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:02:43,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:02:43,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:02:43,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:02:43,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:02:43,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:02:43,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:02:43,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:02:43,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:02:43,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:02:43,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:02:43,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:02:43,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:02:43,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:02:43,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:02:43,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:02:43,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:02:43,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:02:43,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:02:43,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:02:43,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:02:43,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:02:43,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:02:43,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:02:43,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:02:43,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:02:43,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:02:43,556 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 14:02:43,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:02:43,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:02:43,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:02:43,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:02:43,612 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:02:43,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:02:43,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:02:43,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:02:43,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:02:43,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:02:43,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:02:43,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:02:43,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:02:43,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:02:43,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:02:43,615 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:02:43,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:02:43,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:02:43,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:02:43,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:02:43,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:02:43,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:02:43,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:02:43,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:02:43,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:02:43,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:02:43,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:02:43,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:02:43,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:02:43,618 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:02:44,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:02:44,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:02:44,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:02:44,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:02:44,138 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:02:44,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label05.c [2020-10-28 14:02:44,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6bbd8f7f/d77028eb62a345508952854ba62020e6/FLAG95f5b24af [2020-10-28 14:02:45,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:02:45,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label05.c [2020-10-28 14:02:45,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6bbd8f7f/d77028eb62a345508952854ba62020e6/FLAG95f5b24af [2020-10-28 14:02:45,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6bbd8f7f/d77028eb62a345508952854ba62020e6 [2020-10-28 14:02:45,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:02:45,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:02:45,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:02:45,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:02:45,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:02:45,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:02:45" (1/1) ... [2020-10-28 14:02:45,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b49fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:45, skipping insertion in model container [2020-10-28 14:02:45,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:02:45" (1/1) ... [2020-10-28 14:02:45,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:02:46,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:02:48,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:02:48,351 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:02:49,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:02:49,558 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:02:49,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49 WrapperNode [2020-10-28 14:02:49,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:02:49,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:02:49,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:02:49,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:02:49,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:49,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:49,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:49,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:49,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:50,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:50,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (1/1) ... [2020-10-28 14:02:50,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:02:50,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:02:50,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:02:50,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:02:50,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (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 14:02:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:02:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:02:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:02:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:02:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:02:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:02:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 14:02:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 14:02:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 14:02:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:02:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:02:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:02:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:02:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 14:02:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 14:02:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 14:02:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:02:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:02:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:02:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:02:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:02:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:02:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:02:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:02:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:02:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:02:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:02:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:02:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:03:04,716 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:03:04,717 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:03:04,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:03:04 BoogieIcfgContainer [2020-10-28 14:03:04,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:03:04,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:03:04,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:03:04,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:03:04,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:02:45" (1/3) ... [2020-10-28 14:03:04,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5c88b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:03:04, skipping insertion in model container [2020-10-28 14:03:04,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:02:49" (2/3) ... [2020-10-28 14:03:04,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5c88b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:03:04, skipping insertion in model container [2020-10-28 14:03:04,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:03:04" (3/3) ... [2020-10-28 14:03:04,733 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label05.c [2020-10-28 14:03:04,746 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:03:04,754 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:03:04,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:03:04,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:03:04,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:03:04,834 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:03:04,834 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:03:04,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:03:04,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:03:04,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:03:04,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:03:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states. [2020-10-28 14:03:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 14:03:04,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:04,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:03:04,915 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:04,922 INFO L82 PathProgramCache]: Analyzing trace with hash 61052646, now seen corresponding path program 1 times [2020-10-28 14:03:04,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:04,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842832845] [2020-10-28 14:03:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:03:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-28 14:03:06,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:06,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:03:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:03:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 14:03:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:03:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:03:06,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:06,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:03:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:03:06,333 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 14:03:06,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842832845] [2020-10-28 14:03:06,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:03:06,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:03:06,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374138109] [2020-10-28 14:03:06,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:03:06,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:06,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:03:06,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:03:06,368 INFO L87 Difference]: Start difference. First operand 1781 states. Second operand 4 states. [2020-10-28 14:03:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:36,467 INFO L93 Difference]: Finished difference Result 5062 states and 9524 transitions. [2020-10-28 14:03:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:03:36,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-28 14:03:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:36,512 INFO L225 Difference]: With dead ends: 5062 [2020-10-28 14:03:36,512 INFO L226 Difference]: Without dead ends: 3201 [2020-10-28 14:03:36,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:03:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2020-10-28 14:03:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 3153. [2020-10-28 14:03:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2020-10-28 14:03:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5020 transitions. [2020-10-28 14:03:36,759 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5020 transitions. Word has length 67 [2020-10-28 14:03:36,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:36,760 INFO L481 AbstractCegarLoop]: Abstraction has 3153 states and 5020 transitions. [2020-10-28 14:03:36,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:03:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5020 transitions. [2020-10-28 14:03:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 14:03:36,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:36,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:03:36,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:03:36,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:36,768 INFO L82 PathProgramCache]: Analyzing trace with hash -450279912, now seen corresponding path program 1 times [2020-10-28 14:03:36,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:36,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663836336] [2020-10-28 14:03:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:37,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:38,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:38,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 14:03:38,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:03:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-28 14:03:38,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:38,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:38,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 14:03:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:03:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:03:38,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:38,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:38,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:38,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:38,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:03:38,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:38,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:03:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:39,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:03:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 14:03:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:39,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 14:03:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:03:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:39,163 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:03:39,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663836336] [2020-10-28 14:03:39,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:03:39,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:03:39,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442456039] [2020-10-28 14:03:39,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:03:39,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:39,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:03:39,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:03:39,168 INFO L87 Difference]: Start difference. First operand 3153 states and 5020 transitions. Second operand 5 states. [2020-10-28 14:04:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:09,761 INFO L93 Difference]: Finished difference Result 9267 states and 14844 transitions. [2020-10-28 14:04:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:04:09,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-28 14:04:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:09,805 INFO L225 Difference]: With dead ends: 9267 [2020-10-28 14:04:09,806 INFO L226 Difference]: Without dead ends: 6120 [2020-10-28 14:04:09,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:04:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6120 states. [2020-10-28 14:04:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6120 to 6054. [2020-10-28 14:04:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6054 states. [2020-10-28 14:04:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 9061 transitions. [2020-10-28 14:04:09,996 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 9061 transitions. Word has length 138 [2020-10-28 14:04:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:09,997 INFO L481 AbstractCegarLoop]: Abstraction has 6054 states and 9061 transitions. [2020-10-28 14:04:09,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:04:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 9061 transitions. [2020-10-28 14:04:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 14:04:10,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:10,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:04:10,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:04:10,001 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:10,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1182247338, now seen corresponding path program 1 times [2020-10-28 14:04:10,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:10,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736673245] [2020-10-28 14:04:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:11,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:11,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 14:04:11,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:04:11,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-28 14:04:11,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:11,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:11,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:04:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:04:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 14:04:11,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:11,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:11,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:11,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:11,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:04:11,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:11,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:11,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:11,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:04:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:11,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:11,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:11,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:04:11,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 14:04:11,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:11,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:11,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 14:04:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:04:12,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736673245] [2020-10-28 14:04:12,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:04:12,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:04:12,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103274913] [2020-10-28 14:04:12,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:04:12,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:12,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:04:12,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:04:12,057 INFO L87 Difference]: Start difference. First operand 6054 states and 9061 transitions. Second operand 7 states. [2020-10-28 14:04:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:56,748 INFO L93 Difference]: Finished difference Result 18197 states and 27576 transitions. [2020-10-28 14:04:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:04:56,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 14:04:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:56,819 INFO L225 Difference]: With dead ends: 18197 [2020-10-28 14:04:56,819 INFO L226 Difference]: Without dead ends: 12149 [2020-10-28 14:04:56,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:04:56,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12149 states. [2020-10-28 14:04:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12149 to 11968. [2020-10-28 14:04:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11968 states. [2020-10-28 14:04:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11968 states to 11968 states and 15987 transitions. [2020-10-28 14:04:57,215 INFO L78 Accepts]: Start accepts. Automaton has 11968 states and 15987 transitions. Word has length 138 [2020-10-28 14:04:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:57,215 INFO L481 AbstractCegarLoop]: Abstraction has 11968 states and 15987 transitions. [2020-10-28 14:04:57,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:04:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11968 states and 15987 transitions. [2020-10-28 14:04:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 14:04:57,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:57,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:04:57,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:04:57,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -211041855, now seen corresponding path program 1 times [2020-10-28 14:04:57,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:57,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591952798] [2020-10-28 14:04:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:57,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:57,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:58,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:58,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 14:04:58,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:04:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-28 14:04:58,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:58,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:04:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:04:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 14:04:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:04:58,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:58,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:04:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:04:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:58,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:04:58,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 14:04:58,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:58,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:58,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 14:04:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:04:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:04:59,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591952798] [2020-10-28 14:04:59,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:04:59,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 14:04:59,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202708176] [2020-10-28 14:04:59,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:04:59,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:59,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:04:59,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:04:59,089 INFO L87 Difference]: Start difference. First operand 11968 states and 15987 transitions. Second operand 8 states. [2020-10-28 14:05:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:05:58,378 INFO L93 Difference]: Finished difference Result 27252 states and 37263 transitions. [2020-10-28 14:05:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:05:58,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-28 14:05:58,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:05:58,462 INFO L225 Difference]: With dead ends: 27252 [2020-10-28 14:05:58,462 INFO L226 Difference]: Without dead ends: 18115 [2020-10-28 14:05:58,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:05:58,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2020-10-28 14:05:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 17896. [2020-10-28 14:05:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17896 states. [2020-10-28 14:05:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17896 states to 17896 states and 23427 transitions. [2020-10-28 14:05:58,931 INFO L78 Accepts]: Start accepts. Automaton has 17896 states and 23427 transitions. Word has length 140 [2020-10-28 14:05:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:05:58,932 INFO L481 AbstractCegarLoop]: Abstraction has 17896 states and 23427 transitions. [2020-10-28 14:05:58,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:05:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17896 states and 23427 transitions. [2020-10-28 14:05:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 14:05:58,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:05:58,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:58,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:05:58,938 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:05:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:05:58,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1378866746, now seen corresponding path program 1 times [2020-10-28 14:05:58,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:05:58,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979312712] [2020-10-28 14:05:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:05:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:05:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:05:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:06:00,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 14:06:00,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:06:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1718 [2020-10-28 14:06:00,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:06:00,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:06:00,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:06:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:06:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 14:06:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:06:00,869 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 14:06:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:06:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:06:00,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:00,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:06:00,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:06:00,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:06:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:06:00,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:06:00,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:06:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:06:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:06:00,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:06:00,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:06:00,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:06:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:06:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:06:01,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:06:01,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 14:06:01,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:06:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 14:06:01,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:06:01,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:06:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:06:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:06:01,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 14:06:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:06:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:06:01,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979312712] [2020-10-28 14:06:01,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:06:01,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:06:01,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958266051] [2020-10-28 14:06:01,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:06:01,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:06:01,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:06:01,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:06:01,236 INFO L87 Difference]: Start difference. First operand 17896 states and 23427 transitions. Second operand 7 states.