/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/array-fpi/condm.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:53:20,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:53:20,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:53:20,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:53:20,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:53:20,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:53:20,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:53:20,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:53:20,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:53:20,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:53:20,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:53:20,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:53:20,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:53:20,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:53:20,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:53:20,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:53:20,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:53:20,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:53:20,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:53:20,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:53:20,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:53:20,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:53:20,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:53:20,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:53:20,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:53:20,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:53:20,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:53:20,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:53:21,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:53:21,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:53:21,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:53:21,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:53:21,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:53:21,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:53:21,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:53:21,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:53:21,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:53:21,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:53:21,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:53:21,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:53:21,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:53:21,014 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 03:53:21,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:53:21,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:53:21,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:53:21,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:53:21,047 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:53:21,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:53:21,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:53:21,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:53:21,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:53:21,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:53:21,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:53:21,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:53:21,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:53:21,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:53:21,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:53:21,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:53:21,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:53:21,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:53:21,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:53:21,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:53:21,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:53:21,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:53:21,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:53:21,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:53:21,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:53:21,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:53:21,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:53:21,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:53:21,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:53:21,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:53:21,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:53:21,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:53:21,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:53:21,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:53:21,616 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:53:21,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condm.c [2020-10-29 03:53:21,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30c2e1c9/7532e77c5de44003ab90fce9247577cd/FLAGf1f0eabc2 [2020-10-29 03:53:22,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:53:22,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condm.c [2020-10-29 03:53:22,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30c2e1c9/7532e77c5de44003ab90fce9247577cd/FLAGf1f0eabc2 [2020-10-29 03:53:22,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a30c2e1c9/7532e77c5de44003ab90fce9247577cd [2020-10-29 03:53:22,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:53:22,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:53:22,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:53:22,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:53:22,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:53:22,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:22" (1/1) ... [2020-10-29 03:53:22,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22807d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:22, skipping insertion in model container [2020-10-29 03:53:22,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:53:22" (1/1) ... [2020-10-29 03:53:22,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:53:22,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:53:23,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:53:23,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:53:23,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:53:23,211 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:53:23,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23 WrapperNode [2020-10-29 03:53:23,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:53:23,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:53:23,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:53:23,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:53:23,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (1/1) ... [2020-10-29 03:53:23,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:53:23,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:53:23,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:53:23,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:53:23,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (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 03:53:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:53:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:53:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:53:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:53:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:53:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:53:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:53:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:53:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:53:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:53:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:53:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:53:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:53:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:53:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:53:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:53:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:53:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:53:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:53:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:53:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:53:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:53:23,825 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:53:23,826 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:53:23,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:23 BoogieIcfgContainer [2020-10-29 03:53:23,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:53:23,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:53:23,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:53:23,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:53:23,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:53:22" (1/3) ... [2020-10-29 03:53:23,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab5df53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:23, skipping insertion in model container [2020-10-29 03:53:23,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:53:23" (2/3) ... [2020-10-29 03:53:23,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab5df53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:53:23, skipping insertion in model container [2020-10-29 03:53:23,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:53:23" (3/3) ... [2020-10-29 03:53:23,846 INFO L111 eAbstractionObserver]: Analyzing ICFG condm.c [2020-10-29 03:53:23,861 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:53:23,871 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:53:23,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:53:23,934 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:53:23,934 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:53:23,934 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:53:23,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:53:23,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:53:23,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:53:23,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:53:23,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:53:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 03:53:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:53:23,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:23,972 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] [2020-10-29 03:53:23,972 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash -603566119, now seen corresponding path program 1 times [2020-10-29 03:53:23,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:23,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734792111] [2020-10-29 03:53:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:53:25,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:53:25,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-10-29 03:53:25,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:53:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:53:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:53:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:53:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:25,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:25,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:53:25,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:25,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:25,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:25,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:25,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:53:25,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:25,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:25,535 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 03:53:25,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734792111] [2020-10-29 03:53:25,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:53:25,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:53:25,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446918697] [2020-10-29 03:53:25,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:53:25,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:25,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:53:25,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:53:25,568 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-10-29 03:53:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:25,940 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2020-10-29 03:53:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:53:25,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 03:53:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:25,952 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:53:25,952 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:53:25,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:53:25,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:53:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-29 03:53:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:53:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-29 03:53:26,006 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-29 03:53:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:26,006 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-29 03:53:26,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:53:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-29 03:53:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:53:26,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:26,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:26,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:53:26,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:26,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:26,009 INFO L82 PathProgramCache]: Analyzing trace with hash 493588519, now seen corresponding path program 1 times [2020-10-29 03:53:26,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:26,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715863119] [2020-10-29 03:53:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:30,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:53:30,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:53:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4752 [2020-10-29 03:53:30,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:30,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:53:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:53:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:53:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:53:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:31,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:31,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:31,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:53:31,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:31,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:31,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:31,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:31,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:31,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 03:53:31,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:31,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:31,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:31,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715863119] [2020-10-29 03:53:31,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:31,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:53:31,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038000498] [2020-10-29 03:53:31,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:53:31,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:31,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:53:31,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:53:31,137 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2020-10-29 03:53:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:31,667 INFO L93 Difference]: Finished difference Result 87 states and 102 transitions. [2020-10-29 03:53:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:53:31,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-29 03:53:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:31,670 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:53:31,670 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:53:31,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:53:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:53:31,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 40. [2020-10-29 03:53:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:53:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-29 03:53:31,685 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 28 [2020-10-29 03:53:31,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:31,685 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-29 03:53:31,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:53:31,686 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-29 03:53:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:53:31,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:31,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:31,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:53:31,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash 100561509, now seen corresponding path program 1 times [2020-10-29 03:53:31,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:31,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787308932] [2020-10-29 03:53:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:32,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:32,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:53:32,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:53:32,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-10-29 03:53:32,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:32,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:53:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:32,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:53:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:33,090 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-10-29 03:53:33,260 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2020-10-29 03:53:33,812 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 23 [2020-10-29 03:53:33,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:33,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:53:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:33,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:53:33,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:33,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:33,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:33,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:33,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:33,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:33,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:33,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:53:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:33,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787308932] [2020-10-29 03:53:33,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:33,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:53:33,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011310368] [2020-10-29 03:53:33,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:53:33,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:33,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:53:34,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:34,002 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 11 states. [2020-10-29 03:53:34,521 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-10-29 03:53:34,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:34,880 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-29 03:53:34,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:53:34,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-29 03:53:34,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:34,883 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:53:34,884 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:53:34,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:53:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:53:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-10-29 03:53:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:53:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-10-29 03:53:34,909 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 28 [2020-10-29 03:53:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:34,910 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-10-29 03:53:34,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:53:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-10-29 03:53:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:53:34,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:34,913 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:53:34,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:53:34,914 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:34,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:34,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1285185723, now seen corresponding path program 2 times [2020-10-29 03:53:34,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:34,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899981868] [2020-10-29 03:53:34,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:35,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:35,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:53:37,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:53:37,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2733 [2020-10-29 03:53:37,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:53:37,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:53:37,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:53:37,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:37,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:53:37,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:37,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:37,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:37,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:37,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:53:37,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:37,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:37,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:53:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:53:37,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899981868] [2020-10-29 03:53:37,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:37,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:53:37,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020211637] [2020-10-29 03:53:37,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:53:37,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:53:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:53:37,934 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 7 states. [2020-10-29 03:53:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:38,302 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-29 03:53:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:53:38,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-29 03:53:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:38,312 INFO L225 Difference]: With dead ends: 75 [2020-10-29 03:53:38,313 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:53:38,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:53:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:53:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-10-29 03:53:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:53:38,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-29 03:53:38,347 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 30 [2020-10-29 03:53:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:38,348 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-29 03:53:38,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:53:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-29 03:53:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:53:38,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:38,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:53:38,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:53:38,352 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:38,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1080780804, now seen corresponding path program 2 times [2020-10-29 03:53:38,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:38,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474726080] [2020-10-29 03:53:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:41,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:41,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:53:41,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:53:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3426 [2020-10-29 03:53:41,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:41,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:53:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:53:41,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:43,087 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 21 [2020-10-29 03:53:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:43,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:43,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:43,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:43,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:53:43,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:43,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:43,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:43,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:43,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:43,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:43,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:43,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:43,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:43,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:43,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:43,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 03:53:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:43,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474726080] [2020-10-29 03:53:43,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:43,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:53:43,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281302808] [2020-10-29 03:53:43,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:53:43,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:43,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:53:43,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:53:43,222 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 13 states. [2020-10-29 03:53:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:44,111 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2020-10-29 03:53:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:53:44,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-29 03:53:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:44,115 INFO L225 Difference]: With dead ends: 99 [2020-10-29 03:53:44,115 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:53:44,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:53:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:53:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-10-29 03:53:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:53:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-29 03:53:44,128 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 31 [2020-10-29 03:53:44,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:44,129 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-29 03:53:44,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:53:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-29 03:53:44,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:53:44,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:44,130 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:53:44,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:53:44,131 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:44,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:44,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1903668454, now seen corresponding path program 3 times [2020-10-29 03:53:44,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:44,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701805805] [2020-10-29 03:53:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:44,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:44,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:44,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:53:44,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:53:44,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-10-29 03:53:44,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:44,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:53:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:53:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,209 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-10-29 03:53:45,526 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 24 [2020-10-29 03:53:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:45,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:45,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:45,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:45,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:45,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:45,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:45,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:53:45,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701805805] [2020-10-29 03:53:45,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:45,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:53:45,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989143974] [2020-10-29 03:53:45,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:53:45,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:53:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:45,626 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 11 states. [2020-10-29 03:53:46,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:46,357 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-10-29 03:53:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:53:46,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-29 03:53:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:46,364 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:53:46,365 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:53:46,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:53:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:53:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-10-29 03:53:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:53:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-10-29 03:53:46,392 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 33 [2020-10-29 03:53:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:46,392 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-10-29 03:53:46,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:53:46,392 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-10-29 03:53:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:53:46,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:46,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 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 03:53:46,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:53:46,397 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1311152645, now seen corresponding path program 3 times [2020-10-29 03:53:46,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:46,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988548259] [2020-10-29 03:53:46,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:49,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:49,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:53:49,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:53:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3181 [2020-10-29 03:53:49,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:49,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:53:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:53:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:49,921 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 24 [2020-10-29 03:53:50,088 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 25 [2020-10-29 03:53:50,253 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 29 [2020-10-29 03:53:50,426 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2020-10-29 03:53:50,712 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 23 [2020-10-29 03:53:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:50,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:53:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:50,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:50,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:50,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:53:50,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988548259] [2020-10-29 03:53:50,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:50,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:53:50,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199920860] [2020-10-29 03:53:50,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:53:50,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:50,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:53:50,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:53:50,974 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 14 states. [2020-10-29 03:53:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:51,723 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2020-10-29 03:53:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:53:51,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-29 03:53:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:51,725 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:53:51,725 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:53:51,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:53:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:53:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2020-10-29 03:53:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:53:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-10-29 03:53:51,739 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 34 [2020-10-29 03:53:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:51,739 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-10-29 03:53:51,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:53:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-10-29 03:53:51,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:53:51,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:51,741 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:53:51,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:53:51,741 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:51,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1710270799, now seen corresponding path program 1 times [2020-10-29 03:53:51,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:51,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592661311] [2020-10-29 03:53:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:51,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:52,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:53:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:53:52,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-29 03:53:52,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:52,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:53:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:53:52,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:53:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:52,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:52,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:52,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:53:52,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:52,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:52,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:52,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:53:52,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:52,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 03:53:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:52,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:52,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:52,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:52,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:53:52,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:52,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:52,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:53:52,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:52,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:53:52,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:53:52,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592661311] [2020-10-29 03:53:52,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:52,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:53:52,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164282023] [2020-10-29 03:53:52,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:53:52,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:52,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:53:52,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:53:52,838 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 8 states. [2020-10-29 03:53:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:53:53,127 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-10-29 03:53:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:53:53,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-29 03:53:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:53:53,129 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:53:53,129 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:53:53,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:53:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 54. [2020-10-29 03:53:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:53:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-29 03:53:53,150 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 36 [2020-10-29 03:53:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:53:53,150 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-29 03:53:53,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:53:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-29 03:53:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:53:53,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:53:53,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 03:53:53,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:53:53,155 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:53:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:53:53,155 INFO L82 PathProgramCache]: Analyzing trace with hash 676835237, now seen corresponding path program 4 times [2020-10-29 03:53:53,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:53:53,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780882004] [2020-10-29 03:53:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:53:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:55,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:57,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:57,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:53:57,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:53:57,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4043 [2020-10-29 03:53:57,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:57,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:53:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:53:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:53:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:57,571 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 27 [2020-10-29 03:53:58,039 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 42 [2020-10-29 03:53:58,446 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 32 [2020-10-29 03:53:59,274 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 28 [2020-10-29 03:53:59,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:53:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:53:59,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:53:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:53:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:53:59,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:53:59,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:53:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:53:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:53:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:53:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:53:59,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:53:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:53:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:53:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:53:59,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:53:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:53:59,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780882004] [2020-10-29 03:53:59,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:53:59,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:53:59,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354869000] [2020-10-29 03:53:59,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:53:59,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:53:59,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:53:59,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:53:59,419 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 11 states. [2020-10-29 03:53:59,835 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-10-29 03:54:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:00,147 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-29 03:54:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:54:00,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-29 03:54:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:00,152 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:54:00,152 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 03:54:00,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 03:54:00,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 49. [2020-10-29 03:54:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:54:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-29 03:54:00,170 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 36 [2020-10-29 03:54:00,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:00,171 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-29 03:54:00,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:54:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-29 03:54:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:54:00,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:00,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:00,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:54:00,176 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:00,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:00,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2146708784, now seen corresponding path program 1 times [2020-10-29 03:54:00,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:00,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944372088] [2020-10-29 03:54:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:54:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:01,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:54:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,664 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 21 [2020-10-29 03:54:02,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:02,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:54:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:02,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944372088] [2020-10-29 03:54:02,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:02,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:54:02,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811656870] [2020-10-29 03:54:02,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:54:02,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:02,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:54:02,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:54:02,817 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 13 states. [2020-10-29 03:54:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:04,334 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-10-29 03:54:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:54:04,335 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-29 03:54:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:04,337 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:54:04,337 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:54:04,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:54:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:54:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 66. [2020-10-29 03:54:04,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:54:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-29 03:54:04,355 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 41 [2020-10-29 03:54:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:04,356 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-29 03:54:04,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:54:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-29 03:54:04,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:54:04,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:04,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:04,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:54:04,358 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:04,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:04,359 INFO L82 PathProgramCache]: Analyzing trace with hash 576815632, now seen corresponding path program 2 times [2020-10-29 03:54:04,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:04,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200340189] [2020-10-29 03:54:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:04,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:09,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:09,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:54:09,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:54:09,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:54:09,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:09,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:54:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:54:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:54:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:09,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:09,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:09,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:09,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:54:09,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:09,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:09,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:09,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:09,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:09,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:09,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:09,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:09,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:54:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:09,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:09,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:09,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:09,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:54:09,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:09,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:54:09,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200340189] [2020-10-29 03:54:09,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:09,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:54:09,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824765462] [2020-10-29 03:54:09,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:54:09,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:09,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:54:09,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:54:09,775 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 10 states. [2020-10-29 03:54:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:10,377 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2020-10-29 03:54:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:54:10,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-29 03:54:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:10,381 INFO L225 Difference]: With dead ends: 99 [2020-10-29 03:54:10,381 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:54:10,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:54:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-10-29 03:54:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:54:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-29 03:54:10,409 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 41 [2020-10-29 03:54:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:10,409 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-29 03:54:10,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:54:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-29 03:54:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:54:10,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:10,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:10,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:54:10,413 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 422671245, now seen corresponding path program 3 times [2020-10-29 03:54:10,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:10,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148956956] [2020-10-29 03:54:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:14,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:14,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:54:14,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:54:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4023 [2020-10-29 03:54:14,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:14,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:54:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:54:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:14,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:14,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:14,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:14,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:14,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:14,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:14,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:14,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:14,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:14,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:14,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-29 03:54:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:14,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:54:14,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148956956] [2020-10-29 03:54:14,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:14,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:54:14,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799197446] [2020-10-29 03:54:14,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:54:14,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:14,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:54:14,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:54:14,863 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 10 states. [2020-10-29 03:54:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:15,542 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2020-10-29 03:54:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:54:15,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-29 03:54:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:15,545 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:54:15,545 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:54:15,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:54:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 74. [2020-10-29 03:54:15,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 03:54:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-10-29 03:54:15,577 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 44 [2020-10-29 03:54:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:15,577 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-10-29 03:54:15,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:54:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-10-29 03:54:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:54:15,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:15,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:15,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:54:15,579 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:15,579 INFO L82 PathProgramCache]: Analyzing trace with hash -485128533, now seen corresponding path program 4 times [2020-10-29 03:54:15,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:15,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405542768] [2020-10-29 03:54:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:16,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:20,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:54:20,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:54:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:54:20,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:20,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:54:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:54:20,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:21,551 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 17 [2020-10-29 03:54:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:21,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:21,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:21,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:21,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:21,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:21,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:21,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:21,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:21,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:21,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:54:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:21,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:21,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:21,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:54:21,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405542768] [2020-10-29 03:54:21,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:21,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:54:21,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760333488] [2020-10-29 03:54:21,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:54:21,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:21,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:54:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:54:21,704 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 16 states. [2020-10-29 03:54:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:22,938 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2020-10-29 03:54:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:54:22,939 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-10-29 03:54:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:22,941 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:54:22,941 INFO L226 Difference]: Without dead ends: 106 [2020-10-29 03:54:22,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:54:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-29 03:54:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 77. [2020-10-29 03:54:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:54:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-29 03:54:22,957 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 46 [2020-10-29 03:54:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:22,957 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-29 03:54:22,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:54:22,958 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-29 03:54:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:54:22,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:22,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:22,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:54:22,959 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:22,959 INFO L82 PathProgramCache]: Analyzing trace with hash -590494096, now seen corresponding path program 2 times [2020-10-29 03:54:22,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:22,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083586200] [2020-10-29 03:54:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:22,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:24,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:54:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1588 [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:54:24,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:24,959 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 22 [2020-10-29 03:54:25,119 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 26 [2020-10-29 03:54:25,308 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 30 [2020-10-29 03:54:25,521 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2020-10-29 03:54:25,695 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2020-10-29 03:54:26,197 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 12 [2020-10-29 03:54:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:26,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:26,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:26,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:26,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:26,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:26,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:26,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:26,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:26,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:26,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 03:54:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:26,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:26,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:26,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:26,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:54:26,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:26,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:26,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:26,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:54:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083586200] [2020-10-29 03:54:26,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:26,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:54:26,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805680612] [2020-10-29 03:54:26,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:54:26,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:26,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:54:26,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:54:26,346 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 15 states. [2020-10-29 03:54:27,174 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2020-10-29 03:54:28,282 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2020-10-29 03:54:28,571 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-29 03:54:28,757 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-10-29 03:54:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:28,958 INFO L93 Difference]: Finished difference Result 153 states and 175 transitions. [2020-10-29 03:54:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:54:28,959 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-29 03:54:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:28,962 INFO L225 Difference]: With dead ends: 153 [2020-10-29 03:54:28,962 INFO L226 Difference]: Without dead ends: 150 [2020-10-29 03:54:28,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:54:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-29 03:54:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 83. [2020-10-29 03:54:28,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:54:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-29 03:54:28,983 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 47 [2020-10-29 03:54:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:28,984 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-29 03:54:28,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:54:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-29 03:54:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:54:28,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:28,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-29 03:54:28,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:54:28,985 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:28,986 INFO L82 PathProgramCache]: Analyzing trace with hash 624455354, now seen corresponding path program 3 times [2020-10-29 03:54:28,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:28,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169838641] [2020-10-29 03:54:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:29,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:29,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:30,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:54:30,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:54:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-29 03:54:30,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:30,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:54:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:54:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:54:30,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:54:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:30,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:30,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:30,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:30,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:30,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 03:54:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:54:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:30,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 03:54:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:30,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:54:30,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169838641] [2020-10-29 03:54:30,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:30,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:54:30,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143007573] [2020-10-29 03:54:30,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:54:30,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:30,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:54:30,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:54:30,375 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 10 states. [2020-10-29 03:54:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:30,808 INFO L93 Difference]: Finished difference Result 158 states and 177 transitions. [2020-10-29 03:54:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:54:30,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-29 03:54:30,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:30,810 INFO L225 Difference]: With dead ends: 158 [2020-10-29 03:54:30,810 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:54:30,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:54:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:54:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-29 03:54:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:54:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-29 03:54:30,827 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 49 [2020-10-29 03:54:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:30,827 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-29 03:54:30,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:54:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-29 03:54:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:54:30,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:30,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:30,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:54:30,829 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:30,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:30,829 INFO L82 PathProgramCache]: Analyzing trace with hash 773154066, now seen corresponding path program 5 times [2020-10-29 03:54:30,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:30,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122798295] [2020-10-29 03:54:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:33,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:35,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:35,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:54:35,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:54:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 03:54:35,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:35,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:54:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:54:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:36,346 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-10-29 03:54:36,499 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-29 03:54:36,703 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2020-10-29 03:54:36,847 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 22 [2020-10-29 03:54:37,003 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 24 [2020-10-29 03:54:37,431 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 20 [2020-10-29 03:54:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:37,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:37,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:37,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:37,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:54:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:37,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:37,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:37,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:37,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:54:37,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:37,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:37,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:37,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:54:37,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122798295] [2020-10-29 03:54:37,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:37,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:54:37,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507531945] [2020-10-29 03:54:37,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:54:37,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:54:37,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:54:37,597 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 17 states. [2020-10-29 03:54:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:38,937 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-10-29 03:54:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:54:38,938 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-29 03:54:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:38,939 INFO L225 Difference]: With dead ends: 111 [2020-10-29 03:54:38,939 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:54:38,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:54:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:54:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2020-10-29 03:54:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:54:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-29 03:54:38,959 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 49 [2020-10-29 03:54:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:38,960 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-29 03:54:38,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:54:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-29 03:54:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:54:38,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:38,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:54:38,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:54:38,961 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1195956073, now seen corresponding path program 4 times [2020-10-29 03:54:38,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:38,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904576095] [2020-10-29 03:54:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 03:54:43,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:54:43,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:44,489 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 17 [2020-10-29 03:54:44,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:44,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:44,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:54:44,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:44,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:44,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:44,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:44,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:44,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:44,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:54:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:44,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:44,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:44,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:54:44,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:44,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:54:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:44,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 03:54:44,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904576095] [2020-10-29 03:54:44,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:44,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:54:44,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442132153] [2020-10-29 03:54:44,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:54:44,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:44,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:54:44,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:54:44,720 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 12 states. [2020-10-29 03:54:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:45,584 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-29 03:54:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:54:45,585 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-29 03:54:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:45,587 INFO L225 Difference]: With dead ends: 119 [2020-10-29 03:54:45,587 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:54:45,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:54:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:54:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-10-29 03:54:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:54:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-29 03:54:45,602 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 54 [2020-10-29 03:54:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:45,603 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-29 03:54:45,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:54:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-29 03:54:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:54:45,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:45,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:54:45,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:54:45,604 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:45,605 INFO L82 PathProgramCache]: Analyzing trace with hash 527046549, now seen corresponding path program 6 times [2020-10-29 03:54:45,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:45,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107543572] [2020-10-29 03:54:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:48,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:50,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:50,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:54:50,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:54:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:54:50,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:50,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:54:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:54:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:50,917 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 19 [2020-10-29 03:54:51,068 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 26 [2020-10-29 03:54:51,532 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2020-10-29 03:54:51,718 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2020-10-29 03:54:51,902 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2020-10-29 03:54:52,805 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 23 [2020-10-29 03:54:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:52,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:52,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:52,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:52,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:52,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:52,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:52,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:54:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:54:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:52,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:52,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:52,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:52,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:54:52,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:52,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:54:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:54:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:54:52,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107543572] [2020-10-29 03:54:52,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:52,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:54:52,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214175795] [2020-10-29 03:54:52,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:54:52,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:52,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:54:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:54:52,981 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 18 states. [2020-10-29 03:54:54,138 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-29 03:54:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:54:54,509 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-10-29 03:54:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:54:54,510 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-29 03:54:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:54:54,512 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:54:54,512 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 03:54:54,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:54:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 03:54:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2020-10-29 03:54:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:54:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-29 03:54:54,537 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 54 [2020-10-29 03:54:54,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:54:54,537 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-29 03:54:54,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:54:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-29 03:54:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:54:54,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:54:54,538 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:54:54,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:54:54,539 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:54:54,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:54:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1450241870, now seen corresponding path program 5 times [2020-10-29 03:54:54,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:54:54,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078175747] [2020-10-29 03:54:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:54:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:56,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:54:59,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:54:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:54:59,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:59,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:54:59,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:59,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:59,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:59,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:54:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:59,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:54:59,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:54:59,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:54:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:54:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:54:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 03:54:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:54:59,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:54:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 03:54:59,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078175747] [2020-10-29 03:54:59,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:54:59,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:54:59,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959719703] [2020-10-29 03:54:59,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:54:59,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:54:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:54:59,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:54:59,781 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 9 states. [2020-10-29 03:55:00,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:00,426 INFO L93 Difference]: Finished difference Result 206 states and 228 transitions. [2020-10-29 03:55:00,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:55:00,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-29 03:55:00,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:00,430 INFO L225 Difference]: With dead ends: 206 [2020-10-29 03:55:00,431 INFO L226 Difference]: Without dead ends: 160 [2020-10-29 03:55:00,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:55:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-29 03:55:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 110. [2020-10-29 03:55:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 03:55:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2020-10-29 03:55:00,463 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 55 [2020-10-29 03:55:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:00,464 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2020-10-29 03:55:00,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:55:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2020-10-29 03:55:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:55:00,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:00,465 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-29 03:55:00,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:55:00,465 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:00,466 INFO L82 PathProgramCache]: Analyzing trace with hash -80437508, now seen corresponding path program 7 times [2020-10-29 03:55:00,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:00,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774727748] [2020-10-29 03:55:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:05,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:05,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:55:05,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 03:55:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:05,922 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2020-10-29 03:55:07,038 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 18 [2020-10-29 03:55:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:55:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:55:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:55:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:55:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:07,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:07,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:07,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:55:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:07,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:55:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:55:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:55:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:55:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:55:07,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774727748] [2020-10-29 03:55:07,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:55:07,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:55:07,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061581939] [2020-10-29 03:55:07,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:55:07,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:55:07,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:55:07,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:55:07,213 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand 19 states. [2020-10-29 03:55:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:55:08,877 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2020-10-29 03:55:08,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:55:08,880 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-10-29 03:55:08,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:55:08,883 INFO L225 Difference]: With dead ends: 175 [2020-10-29 03:55:08,883 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 03:55:08,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:55:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 03:55:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 133. [2020-10-29 03:55:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 03:55:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2020-10-29 03:55:08,929 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 57 [2020-10-29 03:55:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:55:08,929 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2020-10-29 03:55:08,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:55:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2020-10-29 03:55:08,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:55:08,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:55:08,930 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:55:08,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:55:08,931 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:55:08,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:55:08,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1623032108, now seen corresponding path program 6 times [2020-10-29 03:55:08,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:55:08,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620320079] [2020-10-29 03:55:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:55:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:55:08,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:55:12,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3584 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:55:12,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:55:12,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0