/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:48:24,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:48:24,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:48:25,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:48:25,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:48:25,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:48:25,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:48:25,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:48:25,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:48:25,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:48:25,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:48:25,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:48:25,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:48:25,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:48:25,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:48:25,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:48:25,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:48:25,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:48:25,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:48:25,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:48:25,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:48:25,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:48:25,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:48:25,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:48:25,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:48:25,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:48:25,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:48:25,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:48:25,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:48:25,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:48:25,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:48:25,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:48:25,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:48:25,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:48:25,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:48:25,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:48:25,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:48:25,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:48:25,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:48:25,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:48:25,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:48:25,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:48:25,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:48:25,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:48:25,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:48:25,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:48:25,231 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:48:25,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:48:25,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:48:25,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:48:25,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:48:25,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:48:25,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:48:25,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:48:25,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:48:25,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:48:25,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:48:25,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:48:25,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:48:25,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:48:25,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:48:25,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:48:25,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:48:25,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:25,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:48:25,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:48:25,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:48:25,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:48:25,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:48:25,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:48:25,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:48:25,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:48:25,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:48:25,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:48:25,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:48:25,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:48:25,813 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:48:25,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2020-10-29 07:48:25,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac979c677/cd285a0caaf2404aa9ce493ab2a3fd36/FLAG50822809f [2020-10-29 07:48:26,821 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:48:26,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2020-10-29 07:48:26,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac979c677/cd285a0caaf2404aa9ce493ab2a3fd36/FLAG50822809f [2020-10-29 07:48:26,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac979c677/cd285a0caaf2404aa9ce493ab2a3fd36 [2020-10-29 07:48:26,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:48:26,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:48:26,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:26,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:48:26,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:48:26,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:26" (1/1) ... [2020-10-29 07:48:26,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424011f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:26, skipping insertion in model container [2020-10-29 07:48:26,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:48:26" (1/1) ... [2020-10-29 07:48:26,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:48:27,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:48:28,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:28,081 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:48:28,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:48:28,426 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:48:28,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28 WrapperNode [2020-10-29 07:48:28,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:48:28,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:48:28,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:48:28,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:48:28,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... [2020-10-29 07:48:28,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:48:28,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:48:28,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:48:28,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:48:28,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:48:28,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:48:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:48:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:48:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:48:28,839 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:48:28,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:48:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:48:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:48:28,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:48:28,841 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:48:28,841 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:48:28,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:48:28,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:48:28,841 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:48:28,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:48:28,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:48:28,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:48:28,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:48:28,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:48:28,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:48:28,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:48:32,575 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:48:32,575 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:48:32,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:32 BoogieIcfgContainer [2020-10-29 07:48:32,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:48:32,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:48:32,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:48:32,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:48:32,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:48:26" (1/3) ... [2020-10-29 07:48:32,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5794dc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:32, skipping insertion in model container [2020-10-29 07:48:32,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:48:28" (2/3) ... [2020-10-29 07:48:32,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5794dc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:48:32, skipping insertion in model container [2020-10-29 07:48:32,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:48:32" (3/3) ... [2020-10-29 07:48:32,588 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2020-10-29 07:48:32,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:48:32,632 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:48:32,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:48:32,698 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:48:32,698 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:48:32,698 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:48:32,699 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:48:32,699 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:48:32,699 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:48:32,699 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:48:32,699 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:48:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:48:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 07:48:32,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:32,753 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] [2020-10-29 07:48:32,753 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:32,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1427601471, now seen corresponding path program 1 times [2020-10-29 07:48:32,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:32,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966232075] [2020-10-29 07:48:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:33,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 07:48:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-29 07:48:33,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:33,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:33,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 07:48:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:48:33,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:33,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:33,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:33,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:33,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:48:33,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:33,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:33,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:33,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:33,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:33,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966232075] [2020-10-29 07:48:33,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:33,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:48:33,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203866659] [2020-10-29 07:48:33,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:48:33,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:33,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:48:33,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:48:33,681 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:48:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:40,064 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-29 07:48:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:48:40,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 07:48:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:40,092 INFO L225 Difference]: With dead ends: 1204 [2020-10-29 07:48:40,092 INFO L226 Difference]: Without dead ends: 698 [2020-10-29 07:48:40,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:48:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-29 07:48:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-29 07:48:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 07:48:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-29 07:48:40,285 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 20 [2020-10-29 07:48:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:40,285 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-29 07:48:40,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:48:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-29 07:48:40,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 07:48:40,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:40,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:40,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:48:40,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:40,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1145041078, now seen corresponding path program 1 times [2020-10-29 07:48:40,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:40,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423070043] [2020-10-29 07:48:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:40,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:42,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:42,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:48:42,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-29 07:48:42,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:42,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:48:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:42,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:42,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:42,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:48:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:42,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:48:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:42,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:42,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:48:42,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 07:48:42,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:42,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:48:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:42,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423070043] [2020-10-29 07:48:42,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:42,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:48:42,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991630153] [2020-10-29 07:48:42,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:42,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:42,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:42,994 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-29 07:48:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:49,839 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-29 07:48:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:48:49,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-29 07:48:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:49,854 INFO L225 Difference]: With dead ends: 1712 [2020-10-29 07:48:49,855 INFO L226 Difference]: Without dead ends: 1026 [2020-10-29 07:48:49,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:48:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-29 07:48:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-29 07:48:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-29 07:48:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-29 07:48:49,902 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 89 [2020-10-29 07:48:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:49,903 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-29 07:48:49,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:49,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-29 07:48:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 07:48:49,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:49,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:49,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:48:49,906 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:49,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:49,906 INFO L82 PathProgramCache]: Analyzing trace with hash 22068786, now seen corresponding path program 1 times [2020-10-29 07:48:49,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:49,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983842896] [2020-10-29 07:48:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:48:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:48:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-29 07:48:50,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:50,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:48:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:48:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:48:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:50,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:48:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:50,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:50,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:48:50,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:50,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:48:50,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:50,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:48:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:48:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:48:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:48:50,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:48:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:51,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:48:51,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:48:51,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:48:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:48:51,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:48:51,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:48:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:48:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:48:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:48:51,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983842896] [2020-10-29 07:48:51,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:48:51,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:48:51,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561982527] [2020-10-29 07:48:51,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:48:51,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:48:51,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:48:51,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:48:51,135 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-29 07:48:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:48:58,209 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-29 07:48:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:48:58,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-29 07:48:58,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:48:58,225 INFO L225 Difference]: With dead ends: 2388 [2020-10-29 07:48:58,225 INFO L226 Difference]: Without dead ends: 1686 [2020-10-29 07:48:58,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:48:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-29 07:48:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-29 07:48:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-29 07:48:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-29 07:48:58,287 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 94 [2020-10-29 07:48:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:48:58,288 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-29 07:48:58,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:48:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-29 07:48:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 07:48:58,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:48:58,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:48:58,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:48:58,305 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:48:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:48:58,305 INFO L82 PathProgramCache]: Analyzing trace with hash -411585464, now seen corresponding path program 1 times [2020-10-29 07:48:58,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:48:58,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744523793] [2020-10-29 07:48:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:48:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:48:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:48:59,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:03,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 07:49:03,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:49:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4832 [2020-10-29 07:49:03,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:03,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:49:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:49:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:03,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:49:03,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:03,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:03,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:03,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:03,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:49:03,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:49:03,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:03,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:03,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:49:03,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:49:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:03,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:03,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:49:03,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:49:03,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:03,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:03,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:49:03,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:49:03,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744523793] [2020-10-29 07:49:03,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:03,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:49:03,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748479734] [2020-10-29 07:49:03,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:03,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:03,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:03,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:03,851 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 7 states. [2020-10-29 07:49:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:11,272 INFO L93 Difference]: Finished difference Result 3974 states and 5156 transitions. [2020-10-29 07:49:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:49:11,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-29 07:49:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:11,298 INFO L225 Difference]: With dead ends: 3974 [2020-10-29 07:49:11,298 INFO L226 Difference]: Without dead ends: 2644 [2020-10-29 07:49:11,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:49:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-10-29 07:49:11,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2585. [2020-10-29 07:49:11,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-10-29 07:49:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3125 transitions. [2020-10-29 07:49:11,397 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3125 transitions. Word has length 194 [2020-10-29 07:49:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:11,398 INFO L481 AbstractCegarLoop]: Abstraction has 2585 states and 3125 transitions. [2020-10-29 07:49:11,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3125 transitions. [2020-10-29 07:49:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-29 07:49:11,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:11,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:11,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:49:11,404 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash -17656324, now seen corresponding path program 1 times [2020-10-29 07:49:11,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:11,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891053790] [2020-10-29 07:49:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:11,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-29 07:49:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 07:49:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:49:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:49:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:16,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:16,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:16,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:16,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:16,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:49:16,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:16,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:16,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:16,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:49:16,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-29 07:49:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:17,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:49:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:17,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:49:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:17,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:17,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:17,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:17,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:49:17,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:17,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:49:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:17,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 24 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:49:17,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891053790] [2020-10-29 07:49:17,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:17,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:17,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905590144] [2020-10-29 07:49:17,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:17,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:17,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:17,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:17,919 INFO L87 Difference]: Start difference. First operand 2585 states and 3125 transitions. Second operand 7 states. [2020-10-29 07:49:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:25,007 INFO L93 Difference]: Finished difference Result 4912 states and 5991 transitions. [2020-10-29 07:49:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:49:25,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-29 07:49:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:25,023 INFO L225 Difference]: With dead ends: 4912 [2020-10-29 07:49:25,024 INFO L226 Difference]: Without dead ends: 2640 [2020-10-29 07:49:25,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:49:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-10-29 07:49:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2589. [2020-10-29 07:49:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-10-29 07:49:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3125 transitions. [2020-10-29 07:49:25,112 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3125 transitions. Word has length 300 [2020-10-29 07:49:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:25,113 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 3125 transitions. [2020-10-29 07:49:25,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3125 transitions. [2020-10-29 07:49:25,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 07:49:25,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:25,119 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:25,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:49:25,119 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1119138826, now seen corresponding path program 1 times [2020-10-29 07:49:25,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:25,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336991821] [2020-10-29 07:49:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:25,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:29,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:29,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-29 07:49:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:49:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4416 [2020-10-29 07:49:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:29,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:49:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:49:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 320 [2020-10-29 07:49:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:29,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:29,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:29,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:29,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:49:29,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:29,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:49:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:29,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:30,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:49:30,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 07:49:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:30,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:30,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:49:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:49:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:49:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:30,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:30,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:49:30,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:49:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-29 07:49:30,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:30,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:49:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:49:31,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336991821] [2020-10-29 07:49:31,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:31,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:31,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493245839] [2020-10-29 07:49:31,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:31,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:31,182 INFO L87 Difference]: Start difference. First operand 2589 states and 3125 transitions. Second operand 7 states. [2020-10-29 07:49:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:49:47,408 INFO L93 Difference]: Finished difference Result 5822 states and 7501 transitions. [2020-10-29 07:49:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:49:47,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-29 07:49:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:49:47,433 INFO L225 Difference]: With dead ends: 5822 [2020-10-29 07:49:47,434 INFO L226 Difference]: Without dead ends: 4484 [2020-10-29 07:49:47,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:49:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2020-10-29 07:49:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 3221. [2020-10-29 07:49:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-10-29 07:49:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4076 transitions. [2020-10-29 07:49:47,560 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4076 transitions. Word has length 315 [2020-10-29 07:49:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:49:47,561 INFO L481 AbstractCegarLoop]: Abstraction has 3221 states and 4076 transitions. [2020-10-29 07:49:47,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:49:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4076 transitions. [2020-10-29 07:49:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-29 07:49:47,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:49:47,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:49:47,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:49:47,573 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:49:47,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:49:47,573 INFO L82 PathProgramCache]: Analyzing trace with hash 925121824, now seen corresponding path program 1 times [2020-10-29 07:49:47,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:49:47,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890186947] [2020-10-29 07:49:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:49:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:48,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:52,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:52,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-29 07:49:52,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:49:52,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 07:49:52,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:52,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-29 07:49:52,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:49:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:49:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:52,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:49:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:49:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:52,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:49:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:49:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:49:53,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:53,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:49:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:49:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:53,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:49:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:53,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:49:53,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:49:53,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:53,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:49:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:49:53,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:49:53,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 07:49:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:49:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:49:53,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:49:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:49:53,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:49:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:49:53,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:49:53,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:49:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:49:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:49:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:49:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:49:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:49:53,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890186947] [2020-10-29 07:49:53,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:49:53,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:49:53,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975161217] [2020-10-29 07:49:53,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:49:53,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:49:53,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:49:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:49:53,807 INFO L87 Difference]: Start difference. First operand 3221 states and 4076 transitions. Second operand 7 states. [2020-10-29 07:50:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:03,238 INFO L93 Difference]: Finished difference Result 5924 states and 8112 transitions. [2020-10-29 07:50:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:50:03,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 450 [2020-10-29 07:50:03,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:03,261 INFO L225 Difference]: With dead ends: 5924 [2020-10-29 07:50:03,261 INFO L226 Difference]: Without dead ends: 3954 [2020-10-29 07:50:03,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:50:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-10-29 07:50:03,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3869. [2020-10-29 07:50:03,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3869 states. [2020-10-29 07:50:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 4813 transitions. [2020-10-29 07:50:03,398 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 4813 transitions. Word has length 450 [2020-10-29 07:50:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:03,399 INFO L481 AbstractCegarLoop]: Abstraction has 3869 states and 4813 transitions. [2020-10-29 07:50:03,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 4813 transitions. [2020-10-29 07:50:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-29 07:50:03,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:03,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:03,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:50:03,414 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1878992719, now seen corresponding path program 1 times [2020-10-29 07:50:03,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:03,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334096899] [2020-10-29 07:50:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:03,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-29 07:50:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3776 [2020-10-29 07:50:07,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:07,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:50:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:07,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:07,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:50:07,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:07,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:07,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:07,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:07,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:50:07,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:50:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:07,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:50:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-29 07:50:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:08,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:50:08,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:08,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:50:08,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:08,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:50:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 122 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:50:08,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334096899] [2020-10-29 07:50:08,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:08,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:08,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463977695] [2020-10-29 07:50:08,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:08,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:08,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:08,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:08,259 INFO L87 Difference]: Start difference. First operand 3869 states and 4813 transitions. Second operand 7 states. [2020-10-29 07:50:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:21,148 INFO L93 Difference]: Finished difference Result 9421 states and 12270 transitions. [2020-10-29 07:50:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:50:21,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-29 07:50:21,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:21,185 INFO L225 Difference]: With dead ends: 9421 [2020-10-29 07:50:21,186 INFO L226 Difference]: Without dead ends: 5865 [2020-10-29 07:50:21,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5865 states. [2020-10-29 07:50:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5865 to 5473. [2020-10-29 07:50:21,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5473 states. [2020-10-29 07:50:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 6599 transitions. [2020-10-29 07:50:21,368 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 6599 transitions. Word has length 455 [2020-10-29 07:50:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:21,370 INFO L481 AbstractCegarLoop]: Abstraction has 5473 states and 6599 transitions. [2020-10-29 07:50:21,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 6599 transitions. [2020-10-29 07:50:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-29 07:50:21,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:21,385 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:21,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:50:21,386 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:21,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:21,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1187397618, now seen corresponding path program 1 times [2020-10-29 07:50:21,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:21,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834397233] [2020-10-29 07:50:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:21,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:21,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:23,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:26,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:26,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-29 07:50:26,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:50:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:50:26,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:26,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:50:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:50:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:26,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:26,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:26,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:26,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:26,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:50:26,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:26,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:26,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:26,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:26,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:26,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:26,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:26,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:50:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:50:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:27,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:50:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:50:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:27,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:27,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:50:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:27,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-29 07:50:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:27,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:27,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:50:27,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:27,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 07:50:27,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:27,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:50:27,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:27,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:50:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 148 proven. 156 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-29 07:50:27,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834397233] [2020-10-29 07:50:27,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:27,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:27,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384008656] [2020-10-29 07:50:27,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:27,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:27,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:27,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:27,604 INFO L87 Difference]: Start difference. First operand 5473 states and 6599 transitions. Second operand 7 states. [2020-10-29 07:50:39,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:39,466 INFO L93 Difference]: Finished difference Result 11679 states and 14743 transitions. [2020-10-29 07:50:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:50:39,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-29 07:50:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:39,502 INFO L225 Difference]: With dead ends: 11679 [2020-10-29 07:50:39,502 INFO L226 Difference]: Without dead ends: 6824 [2020-10-29 07:50:39,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:50:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2020-10-29 07:50:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6774. [2020-10-29 07:50:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6774 states. [2020-10-29 07:50:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 8044 transitions. [2020-10-29 07:50:39,705 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 8044 transitions. Word has length 477 [2020-10-29 07:50:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:39,706 INFO L481 AbstractCegarLoop]: Abstraction has 6774 states and 8044 transitions. [2020-10-29 07:50:39,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 8044 transitions. [2020-10-29 07:50:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-29 07:50:39,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:39,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:39,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:50:39,713 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:39,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1508869837, now seen corresponding path program 1 times [2020-10-29 07:50:39,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:39,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898993195] [2020-10-29 07:50:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:44,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:44,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-29 07:50:44,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:50:44,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 07:50:44,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:44,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:50:44,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:50:44,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:50:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:45,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:45,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:50:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:45,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:45,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:45,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:50:45,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 07:50:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:45,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:50:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:50:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:50:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:50:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:45,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:45,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:50:45,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:45,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:50:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:50:45,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:50:45,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:50:45,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:50:45,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:50:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 148 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:50:46,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898993195] [2020-10-29 07:50:46,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:50:46,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:50:46,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196530118] [2020-10-29 07:50:46,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:50:46,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:50:46,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:50:46,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:50:46,185 INFO L87 Difference]: Start difference. First operand 6774 states and 8044 transitions. Second operand 7 states. [2020-10-29 07:50:48,449 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:50:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:50:59,293 INFO L93 Difference]: Finished difference Result 14857 states and 17629 transitions. [2020-10-29 07:50:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:50:59,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-29 07:50:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:50:59,322 INFO L225 Difference]: With dead ends: 14857 [2020-10-29 07:50:59,322 INFO L226 Difference]: Without dead ends: 8396 [2020-10-29 07:50:59,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:50:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8396 states. [2020-10-29 07:50:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8396 to 8347. [2020-10-29 07:50:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8347 states. [2020-10-29 07:50:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 9714 transitions. [2020-10-29 07:50:59,621 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 9714 transitions. Word has length 481 [2020-10-29 07:50:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:50:59,622 INFO L481 AbstractCegarLoop]: Abstraction has 8347 states and 9714 transitions. [2020-10-29 07:50:59,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:50:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 9714 transitions. [2020-10-29 07:50:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-29 07:50:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:50:59,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:50:59,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:50:59,631 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:50:59,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:50:59,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1130239045, now seen corresponding path program 1 times [2020-10-29 07:50:59,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:50:59,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469856491] [2020-10-29 07:50:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:50:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:50:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:00,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:01,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:01,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-29 07:51:01,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:01,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-10-29 07:51:01,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:01,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:01,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:51:01,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:02,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:02,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:02,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:02,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:51:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:02,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:02,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:02,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:02,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:51:02,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:51:02,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:02,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:02,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:51:02,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:51:02,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469856491] [2020-10-29 07:51:02,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:02,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:02,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107970597] [2020-10-29 07:51:02,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:02,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:02,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:02,775 INFO L87 Difference]: Start difference. First operand 8347 states and 9714 transitions. Second operand 7 states. [2020-10-29 07:51:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:13,868 INFO L93 Difference]: Finished difference Result 16129 states and 19793 transitions. [2020-10-29 07:51:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:51:13,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-29 07:51:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:13,904 INFO L225 Difference]: With dead ends: 16129 [2020-10-29 07:51:13,904 INFO L226 Difference]: Without dead ends: 10278 [2020-10-29 07:51:13,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:13,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10278 states. [2020-10-29 07:51:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10278 to 9919. [2020-10-29 07:51:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9919 states. [2020-10-29 07:51:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9919 states to 9919 states and 11985 transitions. [2020-10-29 07:51:14,169 INFO L78 Accepts]: Start accepts. Automaton has 9919 states and 11985 transitions. Word has length 493 [2020-10-29 07:51:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:14,170 INFO L481 AbstractCegarLoop]: Abstraction has 9919 states and 11985 transitions. [2020-10-29 07:51:14,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 9919 states and 11985 transitions. [2020-10-29 07:51:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-29 07:51:14,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:14,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:14,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:51:14,179 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash 439151863, now seen corresponding path program 1 times [2020-10-29 07:51:14,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:14,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092742579] [2020-10-29 07:51:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:15,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:15,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:51:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:15,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:16,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:51:16,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:16,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:16,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:16,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:16,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:51:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 07:51:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:16,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:51:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:51:16,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092742579] [2020-10-29 07:51:16,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:16,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:16,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083120668] [2020-10-29 07:51:16,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:16,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:16,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:16,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:16,690 INFO L87 Difference]: Start difference. First operand 9919 states and 11985 transitions. Second operand 7 states. [2020-10-29 07:51:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:30,331 INFO L93 Difference]: Finished difference Result 22386 states and 28090 transitions. [2020-10-29 07:51:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:51:30,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-29 07:51:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:30,392 INFO L225 Difference]: With dead ends: 22386 [2020-10-29 07:51:30,393 INFO L226 Difference]: Without dead ends: 12780 [2020-10-29 07:51:30,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12780 states. [2020-10-29 07:51:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12780 to 12134. [2020-10-29 07:51:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12134 states. [2020-10-29 07:51:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12134 states to 12134 states and 14904 transitions. [2020-10-29 07:51:30,715 INFO L78 Accepts]: Start accepts. Automaton has 12134 states and 14904 transitions. Word has length 516 [2020-10-29 07:51:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:30,716 INFO L481 AbstractCegarLoop]: Abstraction has 12134 states and 14904 transitions. [2020-10-29 07:51:30,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 12134 states and 14904 transitions. [2020-10-29 07:51:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-29 07:51:30,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:30,725 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:30,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:51:30,726 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:30,727 INFO L82 PathProgramCache]: Analyzing trace with hash -402280999, now seen corresponding path program 1 times [2020-10-29 07:51:30,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:30,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234469753] [2020-10-29 07:51:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:32,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-29 07:51:32,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:51:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2109 [2020-10-29 07:51:32,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:32,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:51:32,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:51:32,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:33,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:33,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 07:51:33,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:33,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:51:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:33,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:33,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:51:33,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:33,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:51:33,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:33,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:33,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 07:51:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:51:33,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234469753] [2020-10-29 07:51:33,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:33,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:51:33,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058081288] [2020-10-29 07:51:33,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:51:33,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:33,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:51:33,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:51:33,872 INFO L87 Difference]: Start difference. First operand 12134 states and 14904 transitions. Second operand 7 states. [2020-10-29 07:51:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:51:47,078 INFO L93 Difference]: Finished difference Result 24013 states and 29643 transitions. [2020-10-29 07:51:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:51:47,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-29 07:51:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:51:47,125 INFO L225 Difference]: With dead ends: 24013 [2020-10-29 07:51:47,125 INFO L226 Difference]: Without dead ends: 12192 [2020-10-29 07:51:47,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:51:47,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12192 states. [2020-10-29 07:51:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12192 to 12159. [2020-10-29 07:51:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12159 states. [2020-10-29 07:51:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12159 states to 12159 states and 14630 transitions. [2020-10-29 07:51:47,456 INFO L78 Accepts]: Start accepts. Automaton has 12159 states and 14630 transitions. Word has length 541 [2020-10-29 07:51:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:51:47,458 INFO L481 AbstractCegarLoop]: Abstraction has 12159 states and 14630 transitions. [2020-10-29 07:51:47,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:51:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 12159 states and 14630 transitions. [2020-10-29 07:51:47,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-10-29 07:51:47,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:51:47,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:51:47,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:51:47,471 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:51:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:51:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash -432550795, now seen corresponding path program 1 times [2020-10-29 07:51:47,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:51:47,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57304994] [2020-10-29 07:51:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:51:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:51:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-29 07:51:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:51:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:51:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:49,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:51:49,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:51:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:49,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:51:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:49,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:49,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:51:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 07:51:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:49,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:51:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:51:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 07:51:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:49,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:51:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:49,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:51:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:51:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:51:49,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:51:49,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:51:49,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 07:51:49,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 07:51:49,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:51:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 306 proven. 114 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:51:50,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57304994] [2020-10-29 07:51:50,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:51:50,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:51:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391553530] [2020-10-29 07:51:50,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:51:50,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:51:50,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:51:50,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:51:50,482 INFO L87 Difference]: Start difference. First operand 12159 states and 14630 transitions. Second operand 10 states. [2020-10-29 07:51:50,750 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-29 07:51:53,268 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:51:55,741 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-29 07:51:58,828 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-29 07:52:06,953 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 68