/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/Problem18_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:29:26,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:29:26,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:29:26,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:29:26,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:29:26,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:29:26,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:29:26,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:29:26,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:29:26,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:29:26,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:29:26,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:29:26,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:29:26,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:29:26,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:29:26,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:29:26,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:29:26,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:29:26,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:29:26,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:29:26,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:29:26,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:29:26,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:29:26,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:29:26,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:29:26,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:29:26,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:29:26,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:29:26,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:29:26,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:29:26,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:29:26,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:29:26,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:29:26,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:29:26,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:29:26,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:29:26,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:29:26,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:29:26,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:29:26,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:29:26,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:29:26,984 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 08:29:27,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:29:27,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:29:27,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:29:27,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:29:27,045 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:29:27,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:29:27,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:29:27,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:29:27,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:29:27,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:29:27,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:29:27,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:29:27,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:29:27,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:29:27,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:29:27,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:29:27,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:29:27,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:29:27,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:29:27,049 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:29:27,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:29:27,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:29:27,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:29:27,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:29:27,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:29:27,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:29:27,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:29:27,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:29:27,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:29:27,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:29:27,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:29:27,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:29:27,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:29:27,536 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:29:27,537 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:29:27,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10.c [2020-10-29 08:29:27,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba315c5cc/bda118ab589847ffa480e6942ffca07d/FLAG02634673d [2020-10-29 08:29:28,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:29:28,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label10.c [2020-10-29 08:29:28,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba315c5cc/bda118ab589847ffa480e6942ffca07d/FLAG02634673d [2020-10-29 08:29:29,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba315c5cc/bda118ab589847ffa480e6942ffca07d [2020-10-29 08:29:29,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:29:29,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:29:29,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:29:29,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:29:29,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:29:29,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:29:29" (1/1) ... [2020-10-29 08:29:29,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:29, skipping insertion in model container [2020-10-29 08:29:29,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:29:29" (1/1) ... [2020-10-29 08:29:29,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:29:29,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:29:30,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:29:30,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:29:31,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:29:31,575 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:29:31,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31 WrapperNode [2020-10-29 08:29:31,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:29:31,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:29:31,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:29:31,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:29:31,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (1/1) ... [2020-10-29 08:29:31,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:29:31,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:29:31,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:29:31,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:29:31,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (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 08:29:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:29:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:29:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:29:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:29:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:29:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:29:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:29:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:29:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:29:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:29:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:29:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:29:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:29:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:29:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:29:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:29:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:29:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:29:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:29:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:29:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:29:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:29:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:29:36,080 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:29:36,081 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:29:36,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:29:36 BoogieIcfgContainer [2020-10-29 08:29:36,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:29:36,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:29:36,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:29:36,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:29:36,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:29:29" (1/3) ... [2020-10-29 08:29:36,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150a1ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:29:36, skipping insertion in model container [2020-10-29 08:29:36,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:29:31" (2/3) ... [2020-10-29 08:29:36,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150a1ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:29:36, skipping insertion in model container [2020-10-29 08:29:36,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:29:36" (3/3) ... [2020-10-29 08:29:36,103 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label10.c [2020-10-29 08:29:36,119 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:29:36,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:29:36,144 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:29:36,191 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:29:36,191 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:29:36,191 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:29:36,191 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:29:36,191 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:29:36,191 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:29:36,192 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:29:36,192 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:29:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:29:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 08:29:36,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:36,245 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] [2020-10-29 08:29:36,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2060912224, now seen corresponding path program 1 times [2020-10-29 08:29:36,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:36,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521090305] [2020-10-29 08:29:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:36,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:36,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 08:29:36,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-29 08:29:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:36,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:29:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:29:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 08:29:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:29:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:37,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:37,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:29:37,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:37,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:29:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:37,127 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 08:29:37,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521090305] [2020-10-29 08:29:37,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:29:37,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:29:37,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817155522] [2020-10-29 08:29:37,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:29:37,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:37,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:29:37,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:29:37,159 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:29:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:29:52,911 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-29 08:29:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:29:52,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-29 08:29:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:29:52,962 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:29:52,962 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:29:52,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:29:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:29:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:29:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3565 transitions. [2020-10-29 08:29:53,199 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3565 transitions. Word has length 25 [2020-10-29 08:29:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:29:53,201 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3565 transitions. [2020-10-29 08:29:53,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:29:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3565 transitions. [2020-10-29 08:29:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 08:29:53,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:29:53,212 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:29:53,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:29:53,213 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:29:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:29:53,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1843820071, now seen corresponding path program 1 times [2020-10-29 08:29:53,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:29:53,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149109876] [2020-10-29 08:29:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:29:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:54,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:54,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:29:54,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:29:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-29 08:29:54,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:54,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:29:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:29:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:29:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:29:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:29:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:29:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:54,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:29:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:29:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:29:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:29:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:29:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:29:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:29:54,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:29:54,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:29:54,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:29:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:29:54,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:29:54,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:29:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:29:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:29:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:29:54,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:29:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:29:54,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149109876] [2020-10-29 08:29:54,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:29:54,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:29:54,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883824802] [2020-10-29 08:29:54,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:29:54,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:29:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:29:54,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:29:54,581 INFO L87 Difference]: Start difference. First operand 2136 states and 3565 transitions. Second operand 7 states. [2020-10-29 08:30:10,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:10,163 INFO L93 Difference]: Finished difference Result 6528 states and 11021 transitions. [2020-10-29 08:30:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:30:10,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 08:30:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:10,207 INFO L225 Difference]: With dead ends: 6528 [2020-10-29 08:30:10,207 INFO L226 Difference]: Without dead ends: 4398 [2020-10-29 08:30:10,216 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 08:30:10,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2020-10-29 08:30:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4334. [2020-10-29 08:30:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4334 states. [2020-10-29 08:30:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 6331 transitions. [2020-10-29 08:30:10,411 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 6331 transitions. Word has length 95 [2020-10-29 08:30:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:10,413 INFO L481 AbstractCegarLoop]: Abstraction has 4334 states and 6331 transitions. [2020-10-29 08:30:10,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 6331 transitions. [2020-10-29 08:30:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-29 08:30:10,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:10,427 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:30:10,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:30:10,428 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:10,429 INFO L82 PathProgramCache]: Analyzing trace with hash -246924358, now seen corresponding path program 1 times [2020-10-29 08:30:10,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:10,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511243538] [2020-10-29 08:30:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:12,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:12,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 08:30:12,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:30:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-10-29 08:30:12,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:12,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 08:30:12,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:30:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:13,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:13,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:13,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:13,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:30:13,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:13,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:13,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:30:13,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:30:13,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:13,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:30:13,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:13,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 08:30:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:13,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:13,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:30:13,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 08:30:13,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:13,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:30:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:30:13,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511243538] [2020-10-29 08:30:13,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:13,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:30:13,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28874690] [2020-10-29 08:30:13,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:30:13,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:13,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:30:13,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:30:13,568 INFO L87 Difference]: Start difference. First operand 4334 states and 6331 transitions. Second operand 8 states. [2020-10-29 08:30:14,932 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:30:35,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:35,136 INFO L93 Difference]: Finished difference Result 17466 states and 26393 transitions. [2020-10-29 08:30:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:30:35,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-10-29 08:30:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:35,212 INFO L225 Difference]: With dead ends: 17466 [2020-10-29 08:30:35,212 INFO L226 Difference]: Without dead ends: 13138 [2020-10-29 08:30:35,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:30:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13138 states. [2020-10-29 08:30:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13138 to 10947. [2020-10-29 08:30:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10947 states. [2020-10-29 08:30:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10947 states to 10947 states and 14777 transitions. [2020-10-29 08:30:35,571 INFO L78 Accepts]: Start accepts. Automaton has 10947 states and 14777 transitions. Word has length 164 [2020-10-29 08:30:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:35,572 INFO L481 AbstractCegarLoop]: Abstraction has 10947 states and 14777 transitions. [2020-10-29 08:30:35,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:30:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10947 states and 14777 transitions. [2020-10-29 08:30:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-29 08:30:35,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:35,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:35,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:30:35,576 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash -549143224, now seen corresponding path program 1 times [2020-10-29 08:30:35,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:35,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221627921] [2020-10-29 08:30:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:39,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:39,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-29 08:30:39,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:30:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3445 [2020-10-29 08:30:39,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:39,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:30:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:30:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:30:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:39,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:39,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:39,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:30:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:39,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:39,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:30:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:30:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:39,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:39,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:39,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:30:39,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:39,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 08:30:39,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:39,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:30:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-29 08:30:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:39,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:39,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:30:39,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:39,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:30:39,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:39,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:39,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:30:39,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:30:40,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221627921] [2020-10-29 08:30:40,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:40,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:30:40,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167839513] [2020-10-29 08:30:40,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:30:40,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:40,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:30:40,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:30:40,102 INFO L87 Difference]: Start difference. First operand 10947 states and 14777 transitions. Second operand 7 states. [2020-10-29 08:30:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:30:51,332 INFO L93 Difference]: Finished difference Result 22813 states and 30793 transitions. [2020-10-29 08:30:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:30:51,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-29 08:30:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:30:51,395 INFO L225 Difference]: With dead ends: 22813 [2020-10-29 08:30:51,395 INFO L226 Difference]: Without dead ends: 11872 [2020-10-29 08:30:51,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 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 08:30:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11872 states. [2020-10-29 08:30:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11872 to 11735. [2020-10-29 08:30:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11735 states. [2020-10-29 08:30:51,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11735 states to 11735 states and 15654 transitions. [2020-10-29 08:30:51,729 INFO L78 Accepts]: Start accepts. Automaton has 11735 states and 15654 transitions. Word has length 220 [2020-10-29 08:30:51,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:30:51,731 INFO L481 AbstractCegarLoop]: Abstraction has 11735 states and 15654 transitions. [2020-10-29 08:30:51,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:30:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 11735 states and 15654 transitions. [2020-10-29 08:30:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-29 08:30:51,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:30:51,741 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:30:51,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:30:51,741 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:30:51,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:30:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash 612726855, now seen corresponding path program 1 times [2020-10-29 08:30:51,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:30:51,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054054739] [2020-10-29 08:30:51,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:30:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:55,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:55,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-29 08:30:55,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:30:55,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4154 [2020-10-29 08:30:55,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:55,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:55,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:30:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 08:30:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:30:56,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:30:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:30:56,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:30:56,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:30:56,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:30:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:30:56,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 08:30:56,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:30:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:30:56,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:30:56,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:56,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:30:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:30:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:30:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:30:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:30:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:30:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:30:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-29 08:30:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:30:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:30:56,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:30:56,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:30:56,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:30:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:30:56,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:30:56,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:30:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:30:56,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 08:30:56,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:30:56,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:30:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 174 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 08:30:57,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054054739] [2020-10-29 08:30:57,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:30:57,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:30:57,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124462908] [2020-10-29 08:30:57,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:30:57,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:30:57,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:30:57,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:30:57,165 INFO L87 Difference]: Start difference. First operand 11735 states and 15654 transitions. Second operand 8 states. [2020-10-29 08:31:19,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:19,836 INFO L93 Difference]: Finished difference Result 30766 states and 42347 transitions. [2020-10-29 08:31:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:31:19,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 406 [2020-10-29 08:31:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:19,897 INFO L225 Difference]: With dead ends: 30766 [2020-10-29 08:31:19,898 INFO L226 Difference]: Without dead ends: 18142 [2020-10-29 08:31:19,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:31:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2020-10-29 08:31:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 18062. [2020-10-29 08:31:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18062 states. [2020-10-29 08:31:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18062 states to 18062 states and 20552 transitions. [2020-10-29 08:31:20,311 INFO L78 Accepts]: Start accepts. Automaton has 18062 states and 20552 transitions. Word has length 406 [2020-10-29 08:31:20,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:20,312 INFO L481 AbstractCegarLoop]: Abstraction has 18062 states and 20552 transitions. [2020-10-29 08:31:20,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:31:20,312 INFO L276 IsEmpty]: Start isEmpty. Operand 18062 states and 20552 transitions. [2020-10-29 08:31:20,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-29 08:31:20,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:20,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:31:20,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:31:20,321 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:20,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:20,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1585419146, now seen corresponding path program 1 times [2020-10-29 08:31:20,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:20,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490696664] [2020-10-29 08:31:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:21,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:25,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:25,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-29 08:31:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:31:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 08:31:25,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:25,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:31:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:31:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:31:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:25,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:25,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:25,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:31:25,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:25,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:25,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:31:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:25,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:26,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:26,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:26,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:26,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-29 08:31:26,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:26,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:31:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:26,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:31:26,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:31:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:26,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:31:26,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:26,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:31:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:26,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:31:26,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:31:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:26,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:26,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:26,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:31:26,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:26,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:31:26,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:26,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 08:31:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 34 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:31:27,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490696664] [2020-10-29 08:31:27,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:27,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:31:27,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000509846] [2020-10-29 08:31:27,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:31:27,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:27,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:31:27,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:31:27,192 INFO L87 Difference]: Start difference. First operand 18062 states and 20552 transitions. Second operand 8 states. [2020-10-29 08:31:41,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:31:41,973 INFO L93 Difference]: Finished difference Result 44373 states and 52223 transitions. [2020-10-29 08:31:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:31:41,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 429 [2020-10-29 08:31:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:31:42,072 INFO L225 Difference]: With dead ends: 44373 [2020-10-29 08:31:42,072 INFO L226 Difference]: Without dead ends: 27019 [2020-10-29 08:31:42,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:31:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27019 states. [2020-10-29 08:31:42,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27019 to 26883. [2020-10-29 08:31:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26883 states. [2020-10-29 08:31:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26883 states to 26883 states and 30807 transitions. [2020-10-29 08:31:42,669 INFO L78 Accepts]: Start accepts. Automaton has 26883 states and 30807 transitions. Word has length 429 [2020-10-29 08:31:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:31:42,670 INFO L481 AbstractCegarLoop]: Abstraction has 26883 states and 30807 transitions. [2020-10-29 08:31:42,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:31:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 26883 states and 30807 transitions. [2020-10-29 08:31:42,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-29 08:31:42,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:31:42,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:31:42,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:31:42,704 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:31:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:31:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 593131019, now seen corresponding path program 1 times [2020-10-29 08:31:42,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:31:42,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299650151] [2020-10-29 08:31:42,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:31:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-29 08:31:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:31:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 08:31:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:47,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:31:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:31:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:31:48,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:31:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:48,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:48,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:48,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:31:48,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:48,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:48,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:48,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:48,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:48,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:48,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:31:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:48,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:48,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:31:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 08:31:48,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:48,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:48,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:31:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 08:31:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:48,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:48,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:31:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:48,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:48,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:31:48,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:31:48,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:48,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:31:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:48,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:31:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:31:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:31:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:31:49,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-29 08:31:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:31:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:31:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:31:49,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:31:49,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:31:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:31:49,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:31:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:31:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:31:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:31:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:31:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:31:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:31:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:31:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:31:49,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:31:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:31:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:31:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:31:49,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:31:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:31:50,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299650151] [2020-10-29 08:31:50,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:31:50,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:31:50,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354486768] [2020-10-29 08:31:50,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:31:50,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:31:50,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:31:50,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:31:50,321 INFO L87 Difference]: Start difference. First operand 26883 states and 30807 transitions. Second operand 7 states. [2020-10-29 08:32:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:02,520 INFO L93 Difference]: Finished difference Result 62591 states and 74026 transitions. [2020-10-29 08:32:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:02,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 956 [2020-10-29 08:32:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:02,635 INFO L225 Difference]: With dead ends: 62591 [2020-10-29 08:32:02,635 INFO L226 Difference]: Without dead ends: 37126 [2020-10-29 08:32:02,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37126 states. [2020-10-29 08:32:03,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37126 to 36340. [2020-10-29 08:32:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36340 states. [2020-10-29 08:32:03,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36340 states to 36340 states and 41932 transitions. [2020-10-29 08:32:03,361 INFO L78 Accepts]: Start accepts. Automaton has 36340 states and 41932 transitions. Word has length 956 [2020-10-29 08:32:03,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:03,362 INFO L481 AbstractCegarLoop]: Abstraction has 36340 states and 41932 transitions. [2020-10-29 08:32:03,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 36340 states and 41932 transitions. [2020-10-29 08:32:03,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-29 08:32:03,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:03,411 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:03,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:32:03,411 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:03,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1636377465, now seen corresponding path program 1 times [2020-10-29 08:32:03,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:03,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196378325] [2020-10-29 08:32:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:04,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:08,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:08,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-29 08:32:08,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:32:08,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 08:32:08,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:08,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 08:32:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:32:08,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 952 [2020-10-29 08:32:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:08,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:08,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:08,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:32:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:08,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:08,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:32:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:10,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-29 08:32:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:10,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-29 08:32:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:10,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:10,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:10,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:32:10,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:10,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:10,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-29 08:32:10,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:10,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:10,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:10,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:10,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:32:10,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:10,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:10,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:10,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 08:32:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:11,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:32:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:11,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:11,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:32:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:32:11,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:11,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:11,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:11,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:32:11,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 243 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-29 08:32:12,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196378325] [2020-10-29 08:32:12,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:12,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:12,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43447730] [2020-10-29 08:32:12,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:12,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:12,262 INFO L87 Difference]: Start difference. First operand 36340 states and 41932 transitions. Second operand 7 states. [2020-10-29 08:32:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:22,626 INFO L93 Difference]: Finished difference Result 75732 states and 89334 transitions. [2020-10-29 08:32:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:32:22,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 961 [2020-10-29 08:32:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:22,762 INFO L225 Difference]: With dead ends: 75732 [2020-10-29 08:32:22,762 INFO L226 Difference]: Without dead ends: 40810 [2020-10-29 08:32:22,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:32:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40810 states. [2020-10-29 08:32:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40810 to 40610. [2020-10-29 08:32:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40610 states. [2020-10-29 08:32:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40610 states to 40610 states and 45912 transitions. [2020-10-29 08:32:23,699 INFO L78 Accepts]: Start accepts. Automaton has 40610 states and 45912 transitions. Word has length 961 [2020-10-29 08:32:23,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:23,701 INFO L481 AbstractCegarLoop]: Abstraction has 40610 states and 45912 transitions. [2020-10-29 08:32:23,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 40610 states and 45912 transitions. [2020-10-29 08:32:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-29 08:32:23,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:23,894 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:23,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:32:23,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1466112536, now seen corresponding path program 1 times [2020-10-29 08:32:23,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:23,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176338702] [2020-10-29 08:32:23,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:24,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 985 [2020-10-29 08:32:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4200 [2020-10-29 08:32:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-29 08:32:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:32:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:28,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:28,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:28,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:28,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:28,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:28,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 08:32:28,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:28,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:28,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:28,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:29,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:29,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:29,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:32:29,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:29,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:29,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:29,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:29,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:29,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:32:29,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-29 08:32:29,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:29,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-29 08:32:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:32:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:29,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:29,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:32:29,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:29,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:32:29,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:29,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:29,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:32:29,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:29,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:32:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:29,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:29,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:32:29,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 08:32:29,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:29,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:32:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-29 08:32:30,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176338702] [2020-10-29 08:32:30,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:30,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106333643] [2020-10-29 08:32:30,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:30,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:30,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:30,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:30,582 INFO L87 Difference]: Start difference. First operand 40610 states and 45912 transitions. Second operand 7 states. [2020-10-29 08:32:47,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:32:47,115 INFO L93 Difference]: Finished difference Result 94822 states and 110235 transitions. [2020-10-29 08:32:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:32:47,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-29 08:32:47,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:32:47,272 INFO L225 Difference]: With dead ends: 94822 [2020-10-29 08:32:47,272 INFO L226 Difference]: Without dead ends: 55630 [2020-10-29 08:32:47,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:32:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55630 states. [2020-10-29 08:32:48,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55630 to 54866. [2020-10-29 08:32:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54866 states. [2020-10-29 08:32:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54866 states to 54866 states and 61496 transitions. [2020-10-29 08:32:48,459 INFO L78 Accepts]: Start accepts. Automaton has 54866 states and 61496 transitions. Word has length 963 [2020-10-29 08:32:48,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:32:48,461 INFO L481 AbstractCegarLoop]: Abstraction has 54866 states and 61496 transitions. [2020-10-29 08:32:48,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:32:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 54866 states and 61496 transitions. [2020-10-29 08:32:48,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-29 08:32:48,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:32:48,480 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:32:48,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:32:48,480 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:32:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:32:48,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1972491431, now seen corresponding path program 1 times [2020-10-29 08:32:48,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:32:48,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873574503] [2020-10-29 08:32:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:32:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:52,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:52,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 999 [2020-10-29 08:32:52,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4065 [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 08:32:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:32:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:32:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:32:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 08:32:53,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:32:53,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 08:32:53,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:32:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:32:53,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:32:53,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:32:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:53,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:32:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:32:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:32:53,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 08:32:53,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:32:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:32:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:32:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:32:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:32:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:53,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:32:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:32:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:32:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:32:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:32:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 08:32:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:32:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:32:54,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873574503] [2020-10-29 08:32:54,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:32:54,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:32:54,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572834404] [2020-10-29 08:32:54,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:32:54,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:32:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:32:54,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:32:54,482 INFO L87 Difference]: Start difference. First operand 54866 states and 61496 transitions. Second operand 7 states.