/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:24:34,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:24:34,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:24:34,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:24:34,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:24:34,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:24:34,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:24:34,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:24:34,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:24:34,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:24:34,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:24:34,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:24:34,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:24:34,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:24:34,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:24:34,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:24:34,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:24:34,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:24:34,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:24:34,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:24:34,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:24:34,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:24:34,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:24:34,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:24:34,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:24:34,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:24:34,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:24:34,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:24:34,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:24:34,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:24:34,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:24:34,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:24:34,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:24:34,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:24:34,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:24:34,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:24:34,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:24:34,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:24:34,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:24:34,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:24:34,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:24:34,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:24:34,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:24:34,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:24:34,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:24:34,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:24:34,824 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:24:34,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:24:34,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:24:34,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:24:34,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:24:34,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:24:34,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:24:34,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:24:34,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:24:34,827 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:24:34,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:24:34,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:24:34,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:24:34,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:24:34,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:24:34,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:24:34,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:24:34,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:24:34,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:24:34,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:24:34,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:24:34,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:24:34,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:24:34,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:24:34,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:24:34,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:24:35,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:24:35,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:24:35,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:24:35,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:24:35,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:24:35,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56.c [2020-10-29 07:24:35,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817ed4fbd/7b4b18ad11ac4502b32417df54d9ca7a/FLAGe1ce1d48f [2020-10-29 07:24:36,696 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:24:36,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label56.c [2020-10-29 07:24:36,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817ed4fbd/7b4b18ad11ac4502b32417df54d9ca7a/FLAGe1ce1d48f [2020-10-29 07:24:37,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817ed4fbd/7b4b18ad11ac4502b32417df54d9ca7a [2020-10-29 07:24:37,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:24:37,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:24:37,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:24:37,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:24:37,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:24:37,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:24:37" (1/1) ... [2020-10-29 07:24:37,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194dab58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:37, skipping insertion in model container [2020-10-29 07:24:37,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:24:37" (1/1) ... [2020-10-29 07:24:37,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:24:37,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:24:39,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:24:39,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:24:40,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:24:40,165 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:24:40,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40 WrapperNode [2020-10-29 07:24:40,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:24:40,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:24:40,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:24:40,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:24:40,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... [2020-10-29 07:24:40,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:24:40,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:24:40,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:24:40,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:24:40,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:24:40,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:24:40,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:24:40,752 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:24:40,752 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:24:40,752 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:24:40,753 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:24:40,754 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:24:40,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:24:40,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:24:40,754 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:24:40,755 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:24:40,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:24:40,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:24:40,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:24:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:24:40,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:24:40,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:24:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:24:40,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:24:51,235 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:24:51,235 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:24:51,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:24:51 BoogieIcfgContainer [2020-10-29 07:24:51,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:24:51,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:24:51,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:24:51,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:24:51,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:24:37" (1/3) ... [2020-10-29 07:24:51,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9dd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:24:51, skipping insertion in model container [2020-10-29 07:24:51,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:24:40" (2/3) ... [2020-10-29 07:24:51,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9dd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:24:51, skipping insertion in model container [2020-10-29 07:24:51,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:24:51" (3/3) ... [2020-10-29 07:24:51,255 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label56.c [2020-10-29 07:24:51,270 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:24:51,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:24:51,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:24:51,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:24:51,334 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:24:51,334 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:24:51,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:24:51,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:24:51,334 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:24:51,334 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:24:51,334 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:24:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:24:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 07:24:51,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:51,389 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] [2020-10-29 07:24:51,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:51,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1329457938, now seen corresponding path program 1 times [2020-10-29 07:24:51,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:51,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975022601] [2020-10-29 07:24:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:52,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:52,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:24:52,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:52,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 07:24:52,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:52,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:24:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:24:52,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 07:24:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:24:52,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:24:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:52,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:24:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:24:52,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975022601] [2020-10-29 07:24:52,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:24:52,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:24:52,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408500653] [2020-10-29 07:24:52,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:24:52,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:52,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:24:52,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:24:52,741 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:25:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:10,456 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:25:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:25:10,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-29 07:25:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:10,501 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:25:10,501 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:25:10,518 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 [2020-10-29 07:25:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:25:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:25:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:25:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:25:10,741 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 60 [2020-10-29 07:25:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:10,745 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:25:10,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:25:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:25:10,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 07:25:10,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:10,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:25:10,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:25:10,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:10,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1502968362, now seen corresponding path program 1 times [2020-10-29 07:25:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666072037] [2020-10-29 07:25:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:13,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:13,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 07:25:13,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:25:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2567 [2020-10-29 07:25:13,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:13,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:13,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:13,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:25:13,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 07:25:13,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:25:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:13,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:13,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:13,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:25:13,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:13,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:25:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:25:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:25:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:13,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:13,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:25:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:25:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:25:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:25:13,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666072037] [2020-10-29 07:25:13,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:25:13,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:25:13,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296372743] [2020-10-29 07:25:13,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:25:13,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:25:13,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:25:13,941 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 6 states. [2020-10-29 07:25:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:25:39,616 INFO L93 Difference]: Finished difference Result 7359 states and 12335 transitions. [2020-10-29 07:25:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:25:39,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-29 07:25:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:25:39,648 INFO L225 Difference]: With dead ends: 7359 [2020-10-29 07:25:39,649 INFO L226 Difference]: Without dead ends: 5355 [2020-10-29 07:25:39,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:25:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2020-10-29 07:25:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 5331. [2020-10-29 07:25:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5331 states. [2020-10-29 07:25:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 8157 transitions. [2020-10-29 07:25:39,837 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 8157 transitions. Word has length 135 [2020-10-29 07:25:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:25:39,840 INFO L481 AbstractCegarLoop]: Abstraction has 5331 states and 8157 transitions. [2020-10-29 07:25:39,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:25:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 8157 transitions. [2020-10-29 07:25:39,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 07:25:39,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:39,848 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, 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] [2020-10-29 07:25:39,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:25:39,848 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:39,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:39,849 INFO L82 PathProgramCache]: Analyzing trace with hash 187868645, now seen corresponding path program 1 times [2020-10-29 07:25:39,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:39,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828281764] [2020-10-29 07:25:39,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:40,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:44,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:44,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 07:25:44,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:25:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 07:25:44,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:44,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:44,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:25:44,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:25:44,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 07:25:44,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:45,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:25:45,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:45,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:25:45,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:25:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:25:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:25:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 07:25:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:45,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:25:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:25:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:25:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:45,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:45,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:25:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:25:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:45,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:25:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:25:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:25:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:25:45,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828281764] [2020-10-29 07:25:45,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:25:45,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:25:45,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423991036] [2020-10-29 07:25:45,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:25:45,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:25:45,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:25:45,743 INFO L87 Difference]: Start difference. First operand 5331 states and 8157 transitions. Second operand 7 states. [2020-10-29 07:26:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:10,698 INFO L93 Difference]: Finished difference Result 15741 states and 24796 transitions. [2020-10-29 07:26:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:26:10,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-29 07:26:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:10,769 INFO L225 Difference]: With dead ends: 15741 [2020-10-29 07:26:10,771 INFO L226 Difference]: Without dead ends: 10416 [2020-10-29 07:26:10,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:26:10,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2020-10-29 07:26:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 10375. [2020-10-29 07:26:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10375 states. [2020-10-29 07:26:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10375 states to 10375 states and 14697 transitions. [2020-10-29 07:26:11,134 INFO L78 Accepts]: Start accepts. Automaton has 10375 states and 14697 transitions. Word has length 211 [2020-10-29 07:26:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:11,137 INFO L481 AbstractCegarLoop]: Abstraction has 10375 states and 14697 transitions. [2020-10-29 07:26:11,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10375 states and 14697 transitions. [2020-10-29 07:26:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-29 07:26:11,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:11,144 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, 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] [2020-10-29 07:26:11,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:26:11,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:11,145 INFO L82 PathProgramCache]: Analyzing trace with hash 651025962, now seen corresponding path program 1 times [2020-10-29 07:26:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390639121] [2020-10-29 07:26:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:11,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:16,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:16,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 07:26:16,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:26:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 07:26:16,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:16,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:26:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:26:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:16,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:16,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:16,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:26:16,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:16,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:26:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:26:16,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:16,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:26:16,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:26:16,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:16,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:26:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:16,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:26:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:16,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:16,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:26:16,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:26:16,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:16,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:26:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:26:17,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390639121] [2020-10-29 07:26:17,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:26:17,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:26:17,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343397052] [2020-10-29 07:26:17,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:17,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:17,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:17,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:17,105 INFO L87 Difference]: Start difference. First operand 10375 states and 14697 transitions. Second operand 7 states. [2020-10-29 07:26:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:53,114 INFO L93 Difference]: Finished difference Result 31198 states and 47032 transitions. [2020-10-29 07:26:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:26:53,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-29 07:26:53,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:53,244 INFO L225 Difference]: With dead ends: 31198 [2020-10-29 07:26:53,244 INFO L226 Difference]: Without dead ends: 20829 [2020-10-29 07:26:53,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:26:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20829 states. [2020-10-29 07:26:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20829 to 20600. [2020-10-29 07:26:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20600 states. [2020-10-29 07:26:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20600 states to 20600 states and 28776 transitions. [2020-10-29 07:26:53,972 INFO L78 Accepts]: Start accepts. Automaton has 20600 states and 28776 transitions. Word has length 230 [2020-10-29 07:26:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:53,973 INFO L481 AbstractCegarLoop]: Abstraction has 20600 states and 28776 transitions. [2020-10-29 07:26:53,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20600 states and 28776 transitions. [2020-10-29 07:26:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 07:26:53,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:53,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:26:53,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:26:53,982 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1361858239, now seen corresponding path program 1 times [2020-10-29 07:26:53,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:53,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307209314] [2020-10-29 07:26:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:54,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:55,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:55,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 07:26:55,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:55,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-10-29 07:26:55,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:55,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:55,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 07:26:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:55,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:55,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:26:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:55,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:55,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 07:26:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-29 07:26:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:56,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 07:26:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:26:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:56,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307209314] [2020-10-29 07:26:56,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:26:56,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:26:56,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465818694] [2020-10-29 07:26:56,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:56,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:56,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:56,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:56,676 INFO L87 Difference]: Start difference. First operand 20600 states and 28776 transitions. Second operand 7 states. [2020-10-29 07:27:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:25,082 INFO L93 Difference]: Finished difference Result 54287 states and 79782 transitions. [2020-10-29 07:27:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:27:25,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-29 07:27:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:25,210 INFO L225 Difference]: With dead ends: 54287 [2020-10-29 07:27:25,210 INFO L226 Difference]: Without dead ends: 33693 [2020-10-29 07:27:25,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:27:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33693 states. [2020-10-29 07:27:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33693 to 33509. [2020-10-29 07:27:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33509 states. [2020-10-29 07:27:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33509 states to 33509 states and 45195 transitions. [2020-10-29 07:27:26,173 INFO L78 Accepts]: Start accepts. Automaton has 33509 states and 45195 transitions. Word has length 251 [2020-10-29 07:27:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:26,174 INFO L481 AbstractCegarLoop]: Abstraction has 33509 states and 45195 transitions. [2020-10-29 07:27:26,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33509 states and 45195 transitions. [2020-10-29 07:27:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 07:27:26,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:26,181 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:27:26,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:27:26,181 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1189693354, now seen corresponding path program 1 times [2020-10-29 07:27:26,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:26,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738460794] [2020-10-29 07:27:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:31,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:31,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 07:27:31,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:27:31,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 07:27:31,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:31,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:27:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:27:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:27:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:31,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:27:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:27:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:31,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:31,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:27:31,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:31,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:27:31,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:31,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:31,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:27:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:27:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:27:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 07:27:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:27:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:27:32,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738460794] [2020-10-29 07:27:32,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:27:32,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:27:32,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269858539] [2020-10-29 07:27:32,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:32,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:32,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:32,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:32,100 INFO L87 Difference]: Start difference. First operand 33509 states and 45195 transitions. Second operand 7 states. [2020-10-29 07:27:36,224 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:28:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:00,202 INFO L93 Difference]: Finished difference Result 85363 states and 123088 transitions. [2020-10-29 07:28:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:28:00,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-29 07:28:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:00,404 INFO L225 Difference]: With dead ends: 85363 [2020-10-29 07:28:00,404 INFO L226 Difference]: Without dead ends: 51860 [2020-10-29 07:28:00,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:28:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51860 states. [2020-10-29 07:28:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51860 to 50724. [2020-10-29 07:28:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50724 states. [2020-10-29 07:28:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50724 states to 50724 states and 73331 transitions. [2020-10-29 07:28:02,589 INFO L78 Accepts]: Start accepts. Automaton has 50724 states and 73331 transitions. Word has length 260 [2020-10-29 07:28:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:02,590 INFO L481 AbstractCegarLoop]: Abstraction has 50724 states and 73331 transitions. [2020-10-29 07:28:02,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:28:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 50724 states and 73331 transitions. [2020-10-29 07:28:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 07:28:02,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:02,596 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:28:02,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:28:02,597 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:02,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash 836964358, now seen corresponding path program 1 times [2020-10-29 07:28:02,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:02,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424861274] [2020-10-29 07:28:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:02,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:06,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:06,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 07:28:06,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:28:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3786 [2020-10-29 07:28:06,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:06,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-29 07:28:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:28:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:06,677 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:28:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:06,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:06,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:28:06,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:06,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:28:06,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:06,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:06,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:28:06,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:28:06,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:06,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:28:06,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:06,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-29 07:28:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:28:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:28:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:07,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:28:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:28:07,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424861274] [2020-10-29 07:28:07,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:07,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:28:07,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675274246] [2020-10-29 07:28:07,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:28:07,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:07,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:28:07,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:28:07,707 INFO L87 Difference]: Start difference. First operand 50724 states and 73331 transitions. Second operand 7 states. [2020-10-29 07:28:08,820 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:28:10,923 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 69