/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:48:57,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:48:57,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:48:57,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:48:57,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:48:57,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:48:57,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:48:57,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:48:57,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:48:57,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:48:57,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:48:57,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:48:57,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:48:57,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:48:57,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:48:57,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:48:57,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:48:57,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:48:57,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:48:57,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:48:57,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:48:57,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:48:57,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:48:57,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:48:57,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:48:57,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:48:57,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:48:57,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:48:57,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:48:57,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:48:57,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:48:57,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:48:57,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:48:57,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:48:57,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:48:57,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:48:57,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:48:57,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:48:57,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:48:57,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:48:57,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:48:57,153 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 [2020-10-28 13:48:57,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:48:57,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:48:57,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:48:57,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:48:57,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:48:57,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:48:57,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:48:57,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:48:57,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:48:57,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:48:57,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:48:57,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:48:57,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:48:57,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:48:57,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:48:57,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:48:57,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:48:57,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:48:57,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:48:57,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:48:57,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:48:57,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:48:57,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:48:57,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:48:57,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:48:57,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:48:57,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:48:57,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:48:57,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:48:57,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:48:57,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:48:57,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:48:57,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:48:57,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:48:57,641 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:48:57,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-28 13:48:57,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f285f23c0/6d9f857fb30d40539d9e25106fd113a2/FLAG2670fbace [2020-10-28 13:48:58,642 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:48:58,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2020-10-28 13:48:58,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f285f23c0/6d9f857fb30d40539d9e25106fd113a2/FLAG2670fbace [2020-10-28 13:48:59,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f285f23c0/6d9f857fb30d40539d9e25106fd113a2 [2020-10-28 13:48:59,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:48:59,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:48:59,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:48:59,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:48:59,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:48:59,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:48:59" (1/1) ... [2020-10-28 13:48:59,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f78a2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:59, skipping insertion in model container [2020-10-28 13:48:59,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:48:59" (1/1) ... [2020-10-28 13:48:59,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:48:59,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:49:00,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:49:00,502 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:49:01,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:49:01,110 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:49:01,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01 WrapperNode [2020-10-28 13:49:01,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:49:01,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:49:01,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:49:01,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:49:01,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (1/1) ... [2020-10-28 13:49:01,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:49:01,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:49:01,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:49:01,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:49:01,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (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 [2020-10-28 13:49:01,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:49:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:49:01,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:49:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:49:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:49:01,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:49:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:49:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:49:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:49:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:49:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:49:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:49:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:49:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:49:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:49:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:49:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:49:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:49:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:49:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:49:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:49:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:49:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:49:05,996 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:49:05,997 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:49:06,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:49:06 BoogieIcfgContainer [2020-10-28 13:49:06,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:49:06,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:49:06,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:49:06,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:49:06,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:48:59" (1/3) ... [2020-10-28 13:49:06,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d27beca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:49:06, skipping insertion in model container [2020-10-28 13:49:06,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:49:01" (2/3) ... [2020-10-28 13:49:06,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d27beca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:49:06, skipping insertion in model container [2020-10-28 13:49:06,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:49:06" (3/3) ... [2020-10-28 13:49:06,009 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2020-10-28 13:49:06,022 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:49:06,029 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:49:06,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:49:06,077 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:49:06,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:49:06,078 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:49:06,078 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:49:06,078 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:49:06,078 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:49:06,078 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:49:06,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:49:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:49:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 13:49:06,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:06,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:06,122 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 620703208, now seen corresponding path program 1 times [2020-10-28 13:49:06,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:06,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435979726] [2020-10-28 13:49:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:06,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 13:49:06,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-28 13:49:06,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:06,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 13:49:06,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:49:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:07,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:07,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:07,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:07,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:49:07,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:07,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:07,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:07,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:07,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435979726] [2020-10-28 13:49:07,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:07,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:49:07,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15657473] [2020-10-28 13:49:07,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:49:07,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:07,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:49:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:49:07,111 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:49:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:16,107 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-28 13:49:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:49:16,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 13:49:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:16,148 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:49:16,150 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:49:16,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:49:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:49:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-28 13:49:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-28 13:49:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-28 13:49:16,378 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 24 [2020-10-28 13:49:16,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:16,379 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-28 13:49:16,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:49:16,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-28 13:49:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 13:49:16,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:16,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:16,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:49:16,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:16,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash 692884486, now seen corresponding path program 1 times [2020-10-28 13:49:16,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:16,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955730174] [2020-10-28 13:49:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:17,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 13:49:17,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-28 13:49:17,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:17,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:49:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:49:17,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:17,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:17,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:49:17,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:17,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:17,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:49:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:17,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:17,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:17,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:49:17,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:17,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:49:17,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:17,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:17,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:49:17,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:18,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955730174] [2020-10-28 13:49:18,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:18,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:49:18,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2983281] [2020-10-28 13:49:18,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:18,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:18,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:18,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:18,150 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 7 states. [2020-10-28 13:49:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:32,016 INFO L93 Difference]: Finished difference Result 4339 states and 7091 transitions. [2020-10-28 13:49:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:49:32,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-28 13:49:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:32,040 INFO L225 Difference]: With dead ends: 4339 [2020-10-28 13:49:32,040 INFO L226 Difference]: Without dead ends: 2916 [2020-10-28 13:49:32,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:49:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2020-10-28 13:49:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2881. [2020-10-28 13:49:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2881 states. [2020-10-28 13:49:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3966 transitions. [2020-10-28 13:49:32,147 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3966 transitions. Word has length 93 [2020-10-28 13:49:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:32,148 INFO L481 AbstractCegarLoop]: Abstraction has 2881 states and 3966 transitions. [2020-10-28 13:49:32,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:32,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3966 transitions. [2020-10-28 13:49:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 13:49:32,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:32,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:49:32,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:49:32,157 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:32,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash 513136396, now seen corresponding path program 1 times [2020-10-28 13:49:32,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:32,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401376842] [2020-10-28 13:49:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:32,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:32,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:32,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:32,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:49:32,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-28 13:49:32,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:32,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:32,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:49:32,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:32,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:32,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:32,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:32,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:49:32,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:32,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:32,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:32,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:32,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:33,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:49:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 13:49:33,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:33,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:49:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:33,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401376842] [2020-10-28 13:49:33,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:33,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:49:33,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104468974] [2020-10-28 13:49:33,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:33,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:33,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:33,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:33,204 INFO L87 Difference]: Start difference. First operand 2881 states and 3966 transitions. Second operand 7 states. [2020-10-28 13:49:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:48,696 INFO L93 Difference]: Finished difference Result 8763 states and 12221 transitions. [2020-10-28 13:49:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:49:48,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 13:49:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:48,730 INFO L225 Difference]: With dead ends: 8763 [2020-10-28 13:49:48,731 INFO L226 Difference]: Without dead ends: 5888 [2020-10-28 13:49:48,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:49:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2020-10-28 13:49:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5814. [2020-10-28 13:49:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5814 states. [2020-10-28 13:49:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 7376 transitions. [2020-10-28 13:49:48,915 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 7376 transitions. Word has length 96 [2020-10-28 13:49:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:48,916 INFO L481 AbstractCegarLoop]: Abstraction has 5814 states and 7376 transitions. [2020-10-28 13:49:48,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 7376 transitions. [2020-10-28 13:49:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 13:49:48,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:48,918 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:49:48,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:49:48,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1867868760, now seen corresponding path program 1 times [2020-10-28 13:49:48,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:48,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045899212] [2020-10-28 13:49:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:49,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:49,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:49:49,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:49,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-28 13:49:49,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:49,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:49:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:49:49,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:49:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:49,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:49,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:49:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:49,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:49:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:49,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:49,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:49:49,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:49:49,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:49,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:49:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:50,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045899212] [2020-10-28 13:49:50,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:49:50,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:49:50,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044090010] [2020-10-28 13:49:50,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:50,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:50,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:50,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:50,140 INFO L87 Difference]: Start difference. First operand 5814 states and 7376 transitions. Second operand 7 states. [2020-10-28 13:50:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:01,858 INFO L93 Difference]: Finished difference Result 14005 states and 17566 transitions. [2020-10-28 13:50:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:50:01,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 13:50:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:01,916 INFO L225 Difference]: With dead ends: 14005 [2020-10-28 13:50:01,916 INFO L226 Difference]: Without dead ends: 8197 [2020-10-28 13:50:01,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:50:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8197 states. [2020-10-28 13:50:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8197 to 8030. [2020-10-28 13:50:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8030 states. [2020-10-28 13:50:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8030 states to 8030 states and 9743 transitions. [2020-10-28 13:50:02,182 INFO L78 Accepts]: Start accepts. Automaton has 8030 states and 9743 transitions. Word has length 114 [2020-10-28 13:50:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:02,182 INFO L481 AbstractCegarLoop]: Abstraction has 8030 states and 9743 transitions. [2020-10-28 13:50:02,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8030 states and 9743 transitions. [2020-10-28 13:50:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 13:50:02,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:02,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:50:02,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:50:02,242 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:02,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1459337138, now seen corresponding path program 1 times [2020-10-28 13:50:02,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:02,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499680143] [2020-10-28 13:50:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:03,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:03,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:50:03,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:50:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-28 13:50:03,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:03,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:50:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:50:03,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:50:03,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:03,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:03,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:03,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:50:03,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:03,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:50:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:03,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:03,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:50:03,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 13:50:03,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:03,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:03,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:03,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:50:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:50:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:50:04,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499680143] [2020-10-28 13:50:04,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:50:04,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:50:04,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699639988] [2020-10-28 13:50:04,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:50:04,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:04,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:50:04,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:50:04,240 INFO L87 Difference]: Start difference. First operand 8030 states and 9743 transitions. Second operand 8 states. [2020-10-28 13:50:19,303 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:50:23,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:23,342 INFO L93 Difference]: Finished difference Result 19204 states and 24833 transitions. [2020-10-28 13:50:23,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:50:23,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-10-28 13:50:23,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:23,406 INFO L225 Difference]: With dead ends: 19204 [2020-10-28 13:50:23,406 INFO L226 Difference]: Without dead ends: 13302 [2020-10-28 13:50:23,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:50:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13302 states. [2020-10-28 13:50:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13302 to 13118. [2020-10-28 13:50:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13118 states. [2020-10-28 13:50:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13118 states to 13118 states and 15320 transitions. [2020-10-28 13:50:23,829 INFO L78 Accepts]: Start accepts. Automaton has 13118 states and 15320 transitions. Word has length 121 [2020-10-28 13:50:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:23,831 INFO L481 AbstractCegarLoop]: Abstraction has 13118 states and 15320 transitions. [2020-10-28 13:50:23,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:50:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13118 states and 15320 transitions. [2020-10-28 13:50:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-28 13:50:23,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:23,840 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:50:23,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:50:23,841 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:23,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2116459854, now seen corresponding path program 1 times [2020-10-28 13:50:23,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:23,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986953684] [2020-10-28 13:50:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:25,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 13:50:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:50:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-10-28 13:50:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:25,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:50:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:50:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:25,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:25,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:25,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:50:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:25,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:25,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:50:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:50:25,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:25,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:50:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:50:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:50:26,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:50:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:26,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:26,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:50:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:50:26,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986953684] [2020-10-28 13:50:26,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:26,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:50:26,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989193411] [2020-10-28 13:50:26,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:50:26,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:26,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:50:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:50:26,503 INFO L87 Difference]: Start difference. First operand 13118 states and 15320 transitions. Second operand 8 states. [2020-10-28 13:50:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:59,342 INFO L93 Difference]: Finished difference Result 31446 states and 38832 transitions. [2020-10-28 13:50:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:50:59,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 307 [2020-10-28 13:50:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:59,406 INFO L225 Difference]: With dead ends: 31446 [2020-10-28 13:50:59,407 INFO L226 Difference]: Without dead ends: 17609 [2020-10-28 13:50:59,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:50:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17609 states. [2020-10-28 13:50:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17609 to 14638. [2020-10-28 13:50:59,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14638 states. [2020-10-28 13:50:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14638 states to 14638 states and 17423 transitions. [2020-10-28 13:50:59,788 INFO L78 Accepts]: Start accepts. Automaton has 14638 states and 17423 transitions. Word has length 307 [2020-10-28 13:50:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:59,789 INFO L481 AbstractCegarLoop]: Abstraction has 14638 states and 17423 transitions. [2020-10-28 13:50:59,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:50:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14638 states and 17423 transitions. [2020-10-28 13:50:59,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-28 13:50:59,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:59,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:50:59,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:50:59,806 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:59,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:59,808 INFO L82 PathProgramCache]: Analyzing trace with hash -25366972, now seen corresponding path program 1 times [2020-10-28 13:50:59,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:59,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614735019] [2020-10-28 13:50:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:04,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:04,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-28 13:51:04,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:51:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 13:51:04,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:04,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:51:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-28 13:51:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:05,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:05,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:05,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:51:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:05,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:05,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:05,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:51:05,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:05,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:51:05,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:05,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:05,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:51:05,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:51:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:06,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:06,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-28 13:51:06,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:06,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-28 13:51:06,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:06,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:51:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:06,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-28 13:51:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 13:51:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:51:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:06,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:51:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 13:51:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:51:07,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614735019] [2020-10-28 13:51:07,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:07,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:07,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425018410] [2020-10-28 13:51:07,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:07,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:07,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:07,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:07,421 INFO L87 Difference]: Start difference. First operand 14638 states and 17423 transitions. Second operand 7 states. [2020-10-28 13:51:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:19,187 INFO L93 Difference]: Finished difference Result 28093 states and 33897 transitions. [2020-10-28 13:51:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:51:19,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 555 [2020-10-28 13:51:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:19,249 INFO L225 Difference]: With dead ends: 28093 [2020-10-28 13:51:19,250 INFO L226 Difference]: Without dead ends: 14157 [2020-10-28 13:51:19,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14157 states. [2020-10-28 13:51:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14157 to 13986. [2020-10-28 13:51:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13986 states. [2020-10-28 13:51:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13986 states to 13986 states and 16813 transitions. [2020-10-28 13:51:19,686 INFO L78 Accepts]: Start accepts. Automaton has 13986 states and 16813 transitions. Word has length 555 [2020-10-28 13:51:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:19,687 INFO L481 AbstractCegarLoop]: Abstraction has 13986 states and 16813 transitions. [2020-10-28 13:51:19,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13986 states and 16813 transitions. [2020-10-28 13:51:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2020-10-28 13:51:19,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:19,723 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:19,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:51:19,724 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:19,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1249015450, now seen corresponding path program 1 times [2020-10-28 13:51:19,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:19,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549144299] [2020-10-28 13:51:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:20,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-28 13:51:25,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:51:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-28 13:51:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:51:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:51:25,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:25,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:25,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:25,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:51:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:25,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:51:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 13:51:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:25,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:51:25,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:51:25,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:25,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:26,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:51:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:51:26,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:51:26,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:26,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:51:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:26,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 13:51:26,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:51:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:26,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:51:26,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:51:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:51:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:51:26,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:51:26,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:51:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 13:51:27,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549144299] [2020-10-28 13:51:27,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:27,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:27,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522557708] [2020-10-28 13:51:27,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:27,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:27,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:27,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:27,740 INFO L87 Difference]: Start difference. First operand 13986 states and 16813 transitions. Second operand 7 states. [2020-10-28 13:51:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:42,938 INFO L93 Difference]: Finished difference Result 32605 states and 40344 transitions. [2020-10-28 13:51:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:51:42,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 948 [2020-10-28 13:51:42,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:42,997 INFO L225 Difference]: With dead ends: 32605 [2020-10-28 13:51:42,997 INFO L226 Difference]: Without dead ends: 19154 [2020-10-28 13:51:43,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19154 states. [2020-10-28 13:51:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19154 to 19053. [2020-10-28 13:51:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19053 states. [2020-10-28 13:51:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19053 states to 19053 states and 21263 transitions. [2020-10-28 13:51:43,387 INFO L78 Accepts]: Start accepts. Automaton has 19053 states and 21263 transitions. Word has length 948 [2020-10-28 13:51:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:43,390 INFO L481 AbstractCegarLoop]: Abstraction has 19053 states and 21263 transitions. [2020-10-28 13:51:43,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:43,390 INFO L276 IsEmpty]: Start isEmpty. Operand 19053 states and 21263 transitions. [2020-10-28 13:51:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2020-10-28 13:51:43,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:43,442 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:51:43,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:51:43,442 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2062792960, now seen corresponding path program 1 times [2020-10-28 13:51:43,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:43,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108650955] [2020-10-28 13:51:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1055 [2020-10-28 13:51:48,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:51:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:51:48,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:48,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 13:51:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:51:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:48,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:48,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:49,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:49,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:51:49,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:49,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:49,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:49,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:51:49,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:49,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:51:49,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:49,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:49,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:49,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:51:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:49,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:49,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:49,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:51:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:50,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:50,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:51:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:50,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:50,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:50,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:50,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:50,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:50,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:51:50,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:50,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:50,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:50,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:51:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:51:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:50,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:50,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:51:50,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:51:50,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:50,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:50,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:51:50,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:51:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:50,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:50,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:51:50,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:51:50,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:50,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:51:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 13:51:51,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108650955] [2020-10-28 13:51:51,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:51,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:51,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743553634] [2020-10-28 13:51:51,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:51,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:51,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:51,166 INFO L87 Difference]: Start difference. First operand 19053 states and 21263 transitions. Second operand 7 states. [2020-10-28 13:52:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:06,934 INFO L93 Difference]: Finished difference Result 43167 states and 48976 transitions. [2020-10-28 13:52:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:06,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1031 [2020-10-28 13:52:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:07,006 INFO L225 Difference]: With dead ends: 43167 [2020-10-28 13:52:07,007 INFO L226 Difference]: Without dead ends: 24828 [2020-10-28 13:52:07,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:52:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24828 states. [2020-10-28 13:52:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24828 to 24768. [2020-10-28 13:52:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24768 states. [2020-10-28 13:52:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24768 states to 24768 states and 27440 transitions. [2020-10-28 13:52:07,471 INFO L78 Accepts]: Start accepts. Automaton has 24768 states and 27440 transitions. Word has length 1031 [2020-10-28 13:52:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:07,474 INFO L481 AbstractCegarLoop]: Abstraction has 24768 states and 27440 transitions. [2020-10-28 13:52:07,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 24768 states and 27440 transitions. [2020-10-28 13:52:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2020-10-28 13:52:07,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:07,491 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:07,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:52:07,492 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:07,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1318358620, now seen corresponding path program 1 times [2020-10-28 13:52:07,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:07,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498788370] [2020-10-28 13:52:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:08,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:12,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:12,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-28 13:52:12,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:52:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 13:52:12,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:12,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:12,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:12,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 13:52:12,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:52:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:13,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:13,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:13,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:52:13,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:13,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:52:13,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:13,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:13,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:13,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:13,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:13,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:13,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:52:13,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:13,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 13:52:13,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:13,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:13,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:52:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:13,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:13,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:13,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:52:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:52:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:13,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:13,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:52:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:13,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:13,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:13,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:13,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:52:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:14,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:14,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:52:14,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:14,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:52:14,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:14,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:14,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:52:14,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:52:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:14,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:52:14,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:52:14,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:14,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:52:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 13:52:15,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498788370] [2020-10-28 13:52:15,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:15,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:52:15,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21106880] [2020-10-28 13:52:15,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:15,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:15,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:15,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:15,151 INFO L87 Difference]: Start difference. First operand 24768 states and 27440 transitions. Second operand 7 states. [2020-10-28 13:52:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:52:28,611 INFO L93 Difference]: Finished difference Result 50439 states and 56106 transitions. [2020-10-28 13:52:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:52:28,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1045 [2020-10-28 13:52:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:52:28,692 INFO L225 Difference]: With dead ends: 50439 [2020-10-28 13:52:28,692 INFO L226 Difference]: Without dead ends: 27089 [2020-10-28 13:52:28,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:52:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27089 states. [2020-10-28 13:52:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27089 to 26957. [2020-10-28 13:52:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26957 states. [2020-10-28 13:52:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26957 states to 26957 states and 29760 transitions. [2020-10-28 13:52:29,215 INFO L78 Accepts]: Start accepts. Automaton has 26957 states and 29760 transitions. Word has length 1045 [2020-10-28 13:52:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:52:29,217 INFO L481 AbstractCegarLoop]: Abstraction has 26957 states and 29760 transitions. [2020-10-28 13:52:29,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:52:29,217 INFO L276 IsEmpty]: Start isEmpty. Operand 26957 states and 29760 transitions. [2020-10-28 13:52:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-28 13:52:29,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:29,234 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:52:29,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:52:29,234 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash 240260222, now seen corresponding path program 1 times [2020-10-28 13:52:29,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:29,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116098576] [2020-10-28 13:52:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:34,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:34,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1076 [2020-10-28 13:52:34,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:52:34,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4633 [2020-10-28 13:52:34,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:34,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:52:34,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:52:34,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:34,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:52:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:52:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 13:52:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:34,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:34,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:34,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:52:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:34,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:34,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:52:34,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:52:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:52:35,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:52:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:35,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:52:35,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:52:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:35,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:35,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:52:35,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:52:35,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:35,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:52:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:52:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:52:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:52:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:35,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:52:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:52:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 226 proven. 75 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2020-10-28 13:52:35,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116098576] [2020-10-28 13:52:35,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:52:35,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:52:35,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926690370] [2020-10-28 13:52:35,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:52:35,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:35,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:52:35,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:52:35,824 INFO L87 Difference]: Start difference. First operand 26957 states and 29760 transitions. Second operand 7 states.