/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_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:25:34,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:25:34,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:25:34,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:25:34,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:25:34,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:25:34,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:25:34,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:25:34,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:25:34,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:25:34,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:25:34,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:25:34,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:25:34,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:25:34,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:25:34,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:25:34,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:25:34,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:25:34,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:25:34,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:25:34,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:25:34,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:25:34,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:25:34,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:25:34,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:25:34,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:25:34,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:25:34,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:25:34,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:25:34,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:25:34,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:25:34,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:25:34,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:25:34,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:25:34,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:25:34,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:25:34,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:25:34,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:25:34,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:25:34,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:25:34,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:25:34,978 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 07:25:35,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:25:35,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:25:35,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:25:35,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:25:35,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:25:35,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:25:35,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:25:35,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:25:35,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:25:35,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:25:35,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:25:35,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:25:35,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:25:35,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:25:35,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:25:35,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:25:35,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:25:35,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:25:35,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:25:35,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:25:35,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:25:35,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:25:35,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:25:35,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:25:35,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:25:35,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:25:35,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:25:35,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:25:35,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:25:35,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:25:35,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:25:35,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:25:35,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:25:35,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:25:35,616 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:25:35,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-29 07:25:35,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2a7d3ba/cb1b8c84350449b2bfb78c073a4d59fa/FLAG1d5148cb1 [2020-10-29 07:25:36,981 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:25:36,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label59.c [2020-10-29 07:25:37,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2a7d3ba/cb1b8c84350449b2bfb78c073a4d59fa/FLAG1d5148cb1 [2020-10-29 07:25:37,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a2a7d3ba/cb1b8c84350449b2bfb78c073a4d59fa [2020-10-29 07:25:37,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:25:37,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:25:37,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:25:37,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:25:37,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:25:37,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:25:37" (1/1) ... [2020-10-29 07:25:37,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d444718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:37, skipping insertion in model container [2020-10-29 07:25:37,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:25:37" (1/1) ... [2020-10-29 07:25:37,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:25:37,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:25:39,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:25:39,394 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:25:40,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:25:40,309 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:25:40,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40 WrapperNode [2020-10-29 07:25:40,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:25:40,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:25:40,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:25:40,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:25:40,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (1/1) ... [2020-10-29 07:25:40,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:25:40,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:25:40,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:25:40,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:25:40,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (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 07:25:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:25:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:25:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:25:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:25:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:25:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:25:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:25:40,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:25:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:25:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:25:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:25:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:25:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:25:40,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:25:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:25:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:25:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:25:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:25:40,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:25:52,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:25:52,761 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:25:52,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:25:52 BoogieIcfgContainer [2020-10-29 07:25:52,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:25:52,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:25:52,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:25:52,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:25:52,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:25:37" (1/3) ... [2020-10-29 07:25:52,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6a7fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:25:52, skipping insertion in model container [2020-10-29 07:25:52,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:25:40" (2/3) ... [2020-10-29 07:25:52,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6a7fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:25:52, skipping insertion in model container [2020-10-29 07:25:52,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:25:52" (3/3) ... [2020-10-29 07:25:52,785 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2020-10-29 07:25:52,801 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:25:52,810 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:25:52,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:25:52,889 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:25:52,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:25:52,889 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:25:52,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:25:52,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:25:52,890 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:25:52,890 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:25:52,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:25:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:25:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 07:25:52,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:25:52,968 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] [2020-10-29 07:25:52,968 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:25:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:25:52,980 INFO L82 PathProgramCache]: Analyzing trace with hash 15046954, now seen corresponding path program 1 times [2020-10-29 07:25:52,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:25:52,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181707631] [2020-10-29 07:25:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:25:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:53,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:53,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:53,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 07:25:53,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-29 07:25:53,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:53,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:25:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:25:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 07:25:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:25:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:25:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:25:54,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:25:54,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:25:54,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:25:54,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:25:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:25:54,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:25:54,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:25:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:25:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:25:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:25:54,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:25:54,268 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 07:25:54,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181707631] [2020-10-29 07:25:54,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:25:54,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:25:54,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919061639] [2020-10-29 07:25:54,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:25:54,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:25:54,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:25:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:25:54,314 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:26:26,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:26,265 INFO L93 Difference]: Finished difference Result 4155 states and 7727 transitions. [2020-10-29 07:26:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:26:26,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-29 07:26:26,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:26,324 INFO L225 Difference]: With dead ends: 4155 [2020-10-29 07:26:26,325 INFO L226 Difference]: Without dead ends: 2934 [2020-10-29 07:26:26,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-29 07:26:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2814. [2020-10-29 07:26:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2814 states. [2020-10-29 07:26:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4745 transitions. [2020-10-29 07:26:26,591 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4745 transitions. Word has length 53 [2020-10-29 07:26:26,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:26,592 INFO L481 AbstractCegarLoop]: Abstraction has 2814 states and 4745 transitions. [2020-10-29 07:26:26,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:26:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4745 transitions. [2020-10-29 07:26:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 07:26:26,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:26,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:26:26,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:26:26,601 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:26,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:26,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1897405285, now seen corresponding path program 1 times [2020-10-29 07:26:26,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:26,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865868612] [2020-10-29 07:26:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:28,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:26:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:26:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-29 07:26:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:26:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:26:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:26:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:26:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:26:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:28,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:28,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:26:28,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:28,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:26:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:28,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:26:28,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:26:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:26:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:26:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:26:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:26:28,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:26:28,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:26:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:26:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 07:26:28,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:26:28,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:26:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:26:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:26:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:26:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:26:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:26:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865868612] [2020-10-29 07:26:29,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:26:29,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:26:29,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084904364] [2020-10-29 07:26:29,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:26:29,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:26:29,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:26:29,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:26:29,181 INFO L87 Difference]: Start difference. First operand 2814 states and 4745 transitions. Second operand 7 states. [2020-10-29 07:26:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:26:59,471 INFO L93 Difference]: Finished difference Result 8418 states and 14311 transitions. [2020-10-29 07:26:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:26:59,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-29 07:26:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:26:59,523 INFO L225 Difference]: With dead ends: 8418 [2020-10-29 07:26:59,523 INFO L226 Difference]: Without dead ends: 5610 [2020-10-29 07:26:59,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:26:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2020-10-29 07:26:59,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 5477. [2020-10-29 07:26:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5477 states. [2020-10-29 07:26:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 8469 transitions. [2020-10-29 07:26:59,760 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 8469 transitions. Word has length 138 [2020-10-29 07:26:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:26:59,761 INFO L481 AbstractCegarLoop]: Abstraction has 5477 states and 8469 transitions. [2020-10-29 07:26:59,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:26:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 8469 transitions. [2020-10-29 07:26:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 07:26:59,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:26:59,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:26:59,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:26:59,766 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:26:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:26:59,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1613258661, now seen corresponding path program 1 times [2020-10-29 07:26:59,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:26:59,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618804395] [2020-10-29 07:26:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:26:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:26:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:01,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 07:27:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:27:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-29 07:27:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:01,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:27:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:27:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 07:27:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:01,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:27:01,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:01,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:27:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:01,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:01,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:27:01,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:01,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-29 07:27:01,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:01,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:01,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:01,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:27:01,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:27:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:27:01,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618804395] [2020-10-29 07:27:01,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:27:01,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:27:01,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190917433] [2020-10-29 07:27:01,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:27:01,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:01,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:27:01,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:27:01,953 INFO L87 Difference]: Start difference. First operand 5477 states and 8469 transitions. Second operand 7 states. [2020-10-29 07:27:31,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:27:31,466 INFO L93 Difference]: Finished difference Result 13690 states and 21790 transitions. [2020-10-29 07:27:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:27:31,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-29 07:27:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:27:31,532 INFO L225 Difference]: With dead ends: 13690 [2020-10-29 07:27:31,533 INFO L226 Difference]: Without dead ends: 8219 [2020-10-29 07:27:31,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:27:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8219 states. [2020-10-29 07:27:31,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8219 to 8022. [2020-10-29 07:27:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8022 states. [2020-10-29 07:27:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 11136 transitions. [2020-10-29 07:27:31,910 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 11136 transitions. Word has length 154 [2020-10-29 07:27:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:27:31,916 INFO L481 AbstractCegarLoop]: Abstraction has 8022 states and 11136 transitions. [2020-10-29 07:27:31,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:27:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 11136 transitions. [2020-10-29 07:27:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 07:27:31,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:27:31,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:27:31,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:27:31,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:27:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:27:31,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1718744159, now seen corresponding path program 1 times [2020-10-29 07:27:31,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:27:31,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026827127] [2020-10-29 07:27:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:27:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:32,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:27:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:27:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2005 [2020-10-29 07:27:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:34,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:27:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:27:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:27:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:27:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:34,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:34,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:27:34,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:27:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:34,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:27:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:27:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:27:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:27:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:27:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:27:34,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:27:34,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:27:34,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:27:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 07:27:34,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:27:34,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:27:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:27:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:27:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:27:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:27:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:27:34,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026827127] [2020-10-29 07:27:34,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:27:34,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:27:34,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580932442] [2020-10-29 07:27:34,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:27:34,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:27:34,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:27:34,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:27:34,957 INFO L87 Difference]: Start difference. First operand 8022 states and 11136 transitions. Second operand 8 states. [2020-10-29 07:27:36,660 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:28:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:02,395 INFO L93 Difference]: Finished difference Result 16364 states and 22802 transitions. [2020-10-29 07:28:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:28:02,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-29 07:28:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:02,495 INFO L225 Difference]: With dead ends: 16364 [2020-10-29 07:28:02,495 INFO L226 Difference]: Without dead ends: 8348 [2020-10-29 07:28:02,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:28:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2020-10-29 07:28:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8081. [2020-10-29 07:28:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8081 states. [2020-10-29 07:28:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8081 states to 8081 states and 11202 transitions. [2020-10-29 07:28:02,759 INFO L78 Accepts]: Start accepts. Automaton has 8081 states and 11202 transitions. Word has length 168 [2020-10-29 07:28:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:02,761 INFO L481 AbstractCegarLoop]: Abstraction has 8081 states and 11202 transitions. [2020-10-29 07:28:02,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:28:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8081 states and 11202 transitions. [2020-10-29 07:28:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 07:28:02,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:02,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:28:02,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:28:02,764 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:02,765 INFO L82 PathProgramCache]: Analyzing trace with hash 122433700, now seen corresponding path program 1 times [2020-10-29 07:28:02,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:02,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513424777] [2020-10-29 07:28:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:02,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:28:03,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 07:28:03,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 07:28:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 07:28:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:03,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:03,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:28:03,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:28:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:28:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:03,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:03,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:28:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:03,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 07:28:03,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:03,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:28:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:28:03,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513424777] [2020-10-29 07:28:03,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:03,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:28:03,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588216652] [2020-10-29 07:28:03,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:28:03,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:28:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:28:03,702 INFO L87 Difference]: Start difference. First operand 8081 states and 11202 transitions. Second operand 5 states. [2020-10-29 07:28:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:28:30,825 INFO L93 Difference]: Finished difference Result 15593 states and 23902 transitions. [2020-10-29 07:28:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:28:30,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-29 07:28:30,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:28:30,875 INFO L225 Difference]: With dead ends: 15593 [2020-10-29 07:28:30,875 INFO L226 Difference]: Without dead ends: 11641 [2020-10-29 07:28:30,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:28:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11641 states. [2020-10-29 07:28:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11641 to 11611. [2020-10-29 07:28:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11611 states. [2020-10-29 07:28:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11611 states to 11611 states and 15608 transitions. [2020-10-29 07:28:31,157 INFO L78 Accepts]: Start accepts. Automaton has 11611 states and 15608 transitions. Word has length 182 [2020-10-29 07:28:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:28:31,158 INFO L481 AbstractCegarLoop]: Abstraction has 11611 states and 15608 transitions. [2020-10-29 07:28:31,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:28:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11611 states and 15608 transitions. [2020-10-29 07:28:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 07:28:31,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:28:31,165 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, 2, 2, 2, 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] [2020-10-29 07:28:31,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:28:31,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:28:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:28:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1581740411, now seen corresponding path program 1 times [2020-10-29 07:28:31,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:28:31,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741494941] [2020-10-29 07:28:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:28:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:35,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:35,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 07:28:35,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:28:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4176 [2020-10-29 07:28:35,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:35,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:28:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:28:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 07:28:35,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:35,595 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:28:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:28:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:28:35,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:28:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:35,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:28:35,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:28:35,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:28:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:36,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:36,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:28:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:28:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 07:28:36,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:36,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:28:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:28:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:28:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:36,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:28:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:28:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:28:36,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:28:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 07:28:36,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:28:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:28:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:28:36,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:28:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:28:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:28:36,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:28:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:28:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:28:36,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741494941] [2020-10-29 07:28:36,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:28:36,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:28:36,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442201839] [2020-10-29 07:28:36,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:28:36,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:28:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:28:36,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:28:36,481 INFO L87 Difference]: Start difference. First operand 11611 states and 15608 transitions. Second operand 7 states. [2020-10-29 07:28:36,640 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:28:39,932 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:29:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:29:06,916 INFO L93 Difference]: Finished difference Result 32037 states and 45062 transitions. [2020-10-29 07:29:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:29:06,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-29 07:29:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:29:06,989 INFO L225 Difference]: With dead ends: 32037 [2020-10-29 07:29:06,989 INFO L226 Difference]: Without dead ends: 21238 [2020-10-29 07:29:07,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:29:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21238 states. [2020-10-29 07:29:07,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21238 to 21095. [2020-10-29 07:29:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21095 states. [2020-10-29 07:29:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21095 states to 21095 states and 26995 transitions. [2020-10-29 07:29:07,504 INFO L78 Accepts]: Start accepts. Automaton has 21095 states and 26995 transitions. Word has length 254 [2020-10-29 07:29:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:29:07,505 INFO L481 AbstractCegarLoop]: Abstraction has 21095 states and 26995 transitions. [2020-10-29 07:29:07,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:29:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 21095 states and 26995 transitions. [2020-10-29 07:29:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 07:29:07,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:29:07,510 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:29:07,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:29:07,511 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:29:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:29:07,511 INFO L82 PathProgramCache]: Analyzing trace with hash -748171287, now seen corresponding path program 1 times [2020-10-29 07:29:07,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:29:07,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136247287] [2020-10-29 07:29:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:29:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:07,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:07,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:09,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:09,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 07:29:09,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:29:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1657 [2020-10-29 07:29:09,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:09,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:29:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:29:09,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:29:09,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:09,430 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:29:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:29:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:09,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:09,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:29:09,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:29:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:09,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:29:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:29:09,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:09,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:29:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:09,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:09,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:09,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:29:09,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 07:29:09,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:09,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:29:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:29:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:29:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:29:09,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:29:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:29:09,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:29:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:29:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:29:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:29:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-29 07:29:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:29:10,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:29:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:29:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:29:10,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:29:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:29:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:29:10,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136247287] [2020-10-29 07:29:10,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:29:10,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:29:10,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225520358] [2020-10-29 07:29:10,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:29:10,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:29:10,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:29:10,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:29:10,247 INFO L87 Difference]: Start difference. First operand 21095 states and 26995 transitions. Second operand 7 states.