/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/systemc/pipeline.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:49:34,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:49:34,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:49:34,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:49:34,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:49:34,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:49:34,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:49:34,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:49:34,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:49:34,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:49:34,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:49:34,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:49:34,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:49:34,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:49:34,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:49:34,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:49:34,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:49:34,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:49:34,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:49:34,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:49:34,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:49:34,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:49:34,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:49:34,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:49:34,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:49:34,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:49:34,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:49:34,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:49:34,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:49:34,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:49:34,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:49:34,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:49:34,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:49:34,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:49:34,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:49:34,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:49:34,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:49:34,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:49:34,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:49:34,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:49:34,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:49:34,309 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 19:49:34,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:49:34,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:49:34,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:49:34,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:49:34,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:49:34,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:49:34,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:49:34,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:49:34,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:49:34,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:49:34,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:49:34,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:49:34,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:49:34,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:49:34,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:49:34,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:49:34,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:49:34,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:49:34,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:49:34,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:49:34,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:49:34,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:49:34,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:49:34,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:49:34,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:49:34,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:49:34,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:49:34,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:49:34,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:49:34,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:49:34,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:49:34,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:49:34,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:49:34,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:49:34,878 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:49:34,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pipeline.cil-2.c [2020-10-28 19:49:34,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da5f32bd9/12e01f0bd4d94a64b3822275a5153dd0/FLAG9490f2020 [2020-10-28 19:49:35,540 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:49:35,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/pipeline.cil-2.c [2020-10-28 19:49:35,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da5f32bd9/12e01f0bd4d94a64b3822275a5153dd0/FLAG9490f2020 [2020-10-28 19:49:35,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da5f32bd9/12e01f0bd4d94a64b3822275a5153dd0 [2020-10-28 19:49:35,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:49:35,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:49:35,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:49:35,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:49:35,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:49:35,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:49:35" (1/1) ... [2020-10-28 19:49:35,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5d40e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:35, skipping insertion in model container [2020-10-28 19:49:35,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:49:35" (1/1) ... [2020-10-28 19:49:35,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:49:35,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:49:36,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:49:36,234 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:49:36,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:49:36,314 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:49:36,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36 WrapperNode [2020-10-28 19:49:36,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:49:36,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:49:36,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:49:36,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:49:36,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (1/1) ... [2020-10-28 19:49:36,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:49:36,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:49:36,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:49:36,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:49:36,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (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 19:49:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:49:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:49:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:49:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-28 19:49:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure N_generate [2020-10-28 19:49:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure S1_addsub [2020-10-28 19:49:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure S2_presdbl [2020-10-28 19:49:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure S3_zero [2020-10-28 19:49:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure D_print [2020-10-28 19:49:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-28 19:49:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-28 19:49:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:49:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:49:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:49:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:49:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:49:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 19:49:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-28 19:49:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure N_generate [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure S1_addsub [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure S2_presdbl [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure S3_zero [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure D_print [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-28 19:49:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:49:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:49:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:49:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:49:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:49:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:49:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:49:37,313 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:49:37,314 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 19:49:37,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:49:37 BoogieIcfgContainer [2020-10-28 19:49:37,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:49:37,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:49:37,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:49:37,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:49:37,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:49:35" (1/3) ... [2020-10-28 19:49:37,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448be1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:49:37, skipping insertion in model container [2020-10-28 19:49:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:49:36" (2/3) ... [2020-10-28 19:49:37,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448be1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:49:37, skipping insertion in model container [2020-10-28 19:49:37,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:49:37" (3/3) ... [2020-10-28 19:49:37,325 INFO L111 eAbstractionObserver]: Analyzing ICFG pipeline.cil-2.c [2020-10-28 19:49:37,338 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:49:37,343 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:49:37,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:49:37,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:49:37,387 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:49:37,387 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:49:37,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:49:37,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:49:37,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:49:37,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:49:37,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:49:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-10-28 19:49:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 19:49:37,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:37,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:49:37,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:37,434 INFO L82 PathProgramCache]: Analyzing trace with hash 252079489, now seen corresponding path program 1 times [2020-10-28 19:49:37,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:37,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809602886] [2020-10-28 19:49:37,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:40,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:42,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:42,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 19:49:42,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 19:49:42,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 19:49:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:42,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 19:49:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:42,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:49:43,150 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:43,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:43,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:43,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 19:49:43,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:43,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:43,558 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:49:43,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:43,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 19:49:43,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:49:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 19:49:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:43,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:49:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:43,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 19:49:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:43,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:43,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:44,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:44,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 19:49:44,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:49:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 19:49:44,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:44,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 19:49:44,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:49:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 19:49:44,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809602886] [2020-10-28 19:49:44,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:49:44,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-28 19:49:44,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810653116] [2020-10-28 19:49:44,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:49:44,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:49:44,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:49:44,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:49:44,120 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 4 states. [2020-10-28 19:49:45,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:49:45,499 INFO L93 Difference]: Finished difference Result 398 states and 672 transitions. [2020-10-28 19:49:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 19:49:45,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-28 19:49:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:49:45,515 INFO L225 Difference]: With dead ends: 398 [2020-10-28 19:49:45,515 INFO L226 Difference]: Without dead ends: 218 [2020-10-28 19:49:45,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:49:45,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-28 19:49:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 177. [2020-10-28 19:49:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-28 19:49:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 289 transitions. [2020-10-28 19:49:45,590 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 289 transitions. Word has length 100 [2020-10-28 19:49:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:49:45,591 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 289 transitions. [2020-10-28 19:49:45,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:49:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 289 transitions. [2020-10-28 19:49:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:49:45,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:49:45,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:49:45,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:49:45,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:49:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:49:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1597235237, now seen corresponding path program 1 times [2020-10-28 19:49:45,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:49:45,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587860951] [2020-10-28 19:49:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:49:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:49:50,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 19:49:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:49:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:50,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 19:49:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:49:50,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:51,014 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:49:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:49:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:51,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:49:51,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:49:51,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:51,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:49:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:49:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:51,193 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:49:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:49:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:51,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:56,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:49:56,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 19:49:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:49:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:56,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 19:49:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:49:56,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:49:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:49:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:49:56,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:49:56,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:49:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:49:56,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:49:56,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:49:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:49:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:49:56,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:49:56,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:49:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:49:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:49:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:49:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:01,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:01,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:50:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:50:01,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:01,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:01,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 19:50:01,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:50:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:01,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:01,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:01,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:01,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:50:01,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:01,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:50:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 19:50:01,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587860951] [2020-10-28 19:50:01,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:50:01,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 19:50:01,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212798286] [2020-10-28 19:50:01,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:50:01,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:01,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:50:01,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:50:01,566 INFO L87 Difference]: Start difference. First operand 177 states and 289 transitions. Second operand 6 states. [2020-10-28 19:50:01,853 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:02,863 INFO L93 Difference]: Finished difference Result 616 states and 1024 transitions. [2020-10-28 19:50:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:50:02,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-28 19:50:02,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:02,876 INFO L225 Difference]: With dead ends: 616 [2020-10-28 19:50:02,876 INFO L226 Difference]: Without dead ends: 446 [2020-10-28 19:50:02,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:50:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-28 19:50:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 343. [2020-10-28 19:50:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-28 19:50:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 570 transitions. [2020-10-28 19:50:02,975 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 570 transitions. Word has length 202 [2020-10-28 19:50:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:02,977 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 570 transitions. [2020-10-28 19:50:02,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:50:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 570 transitions. [2020-10-28 19:50:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:50:02,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:02,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:50:02,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:50:02,988 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:02,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1670219867, now seen corresponding path program 1 times [2020-10-28 19:50:02,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:02,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003734885] [2020-10-28 19:50:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:50:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-28 19:50:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:50:08,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:08,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 19:50:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:50:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:08,364 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:08,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:08,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:50:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:08,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:50:08,598 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:50:08,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:50:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:08,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:13,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 19:50:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:50:13,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:13,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 19:50:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:50:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:13,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:13,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:50:13,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:13,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:13,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:50:13,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:50:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 19:50:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:50:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:18,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:18,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:18,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:50:18,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:18,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:18,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:50:18,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-28 19:50:18,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003734885] [2020-10-28 19:50:18,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:50:18,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 19:50:18,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676926779] [2020-10-28 19:50:18,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:50:18,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:50:18,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:50:18,857 INFO L87 Difference]: Start difference. First operand 343 states and 570 transitions. Second operand 7 states. [2020-10-28 19:50:19,136 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:50:19,922 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:20,164 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:21,317 INFO L93 Difference]: Finished difference Result 2075 states and 3594 transitions. [2020-10-28 19:50:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 19:50:21,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-28 19:50:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:21,337 INFO L225 Difference]: With dead ends: 2075 [2020-10-28 19:50:21,337 INFO L226 Difference]: Without dead ends: 1739 [2020-10-28 19:50:21,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-28 19:50:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-10-28 19:50:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1339. [2020-10-28 19:50:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-10-28 19:50:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2314 transitions. [2020-10-28 19:50:21,470 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2314 transitions. Word has length 202 [2020-10-28 19:50:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:21,470 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 2314 transitions. [2020-10-28 19:50:21,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:50:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2314 transitions. [2020-10-28 19:50:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:50:21,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:21,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:50:21,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:50:21,487 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1492746785, now seen corresponding path program 1 times [2020-10-28 19:50:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:21,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988266699] [2020-10-28 19:50:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:21,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 19:50:26,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:50:26,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:26,780 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:26,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:26,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:26,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:50:26,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:26,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:26,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:26,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:26,934 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:50:26,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:50:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:26,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:31,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:31,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 19:50:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:32,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:32,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:50:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:50:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:32,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:37,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 19:50:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:50:37,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:37,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 19:50:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:50:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:37,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:37,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:37,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:50:37,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:37,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:50:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-28 19:50:37,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988266699] [2020-10-28 19:50:37,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:50:37,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 19:50:37,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843951046] [2020-10-28 19:50:37,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:50:37,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:50:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:50:37,157 INFO L87 Difference]: Start difference. First operand 1339 states and 2314 transitions. Second operand 7 states. [2020-10-28 19:50:37,440 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:50:38,256 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:38,525 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:50:40,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:40,033 INFO L93 Difference]: Finished difference Result 8203 states and 16150 transitions. [2020-10-28 19:50:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 19:50:40,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-28 19:50:40,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:40,172 INFO L225 Difference]: With dead ends: 8203 [2020-10-28 19:50:40,172 INFO L226 Difference]: Without dead ends: 6871 [2020-10-28 19:50:40,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-28 19:50:40,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6871 states. [2020-10-28 19:50:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6871 to 5291. [2020-10-28 19:50:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5291 states. [2020-10-28 19:50:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 10410 transitions. [2020-10-28 19:50:41,018 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 10410 transitions. Word has length 202 [2020-10-28 19:50:41,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:41,019 INFO L481 AbstractCegarLoop]: Abstraction has 5291 states and 10410 transitions. [2020-10-28 19:50:41,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 19:50:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 10410 transitions. [2020-10-28 19:50:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:50:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:41,160 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:50:41,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:50:41,160 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:41,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1838390549, now seen corresponding path program 1 times [2020-10-28 19:50:41,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:41,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845384747] [2020-10-28 19:50:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:42,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:46,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:50:46,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:50:46,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:50:46,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:46,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:46,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:46,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 19:50:46,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:50:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:46,480 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:50:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:50:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:46,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:50:46,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:50:46,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:46,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:46,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:46,657 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:50:46,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:50:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:47,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:51,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:50:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:50:51,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:51,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 19:50:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 19:50:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:51,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:51,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:51,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:50:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:50:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:52,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:50:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:56,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:50:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:50:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:50:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-28 19:50:56,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845384747] [2020-10-28 19:50:56,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:50:56,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 19:50:56,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355423866] [2020-10-28 19:50:56,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:50:56,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:50:56,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:50:56,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:50:56,853 INFO L87 Difference]: Start difference. First operand 5291 states and 10410 transitions. Second operand 6 states. [2020-10-28 19:50:57,111 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 19:50:58,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:50:58,447 INFO L93 Difference]: Finished difference Result 12575 states and 26205 transitions. [2020-10-28 19:50:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:50:58,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-28 19:50:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:50:58,588 INFO L225 Difference]: With dead ends: 12575 [2020-10-28 19:50:58,588 INFO L226 Difference]: Without dead ends: 7291 [2020-10-28 19:50:58,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:50:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2020-10-28 19:50:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 5771. [2020-10-28 19:50:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5771 states. [2020-10-28 19:50:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5771 states to 5771 states and 11162 transitions. [2020-10-28 19:50:59,663 INFO L78 Accepts]: Start accepts. Automaton has 5771 states and 11162 transitions. Word has length 202 [2020-10-28 19:50:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:50:59,664 INFO L481 AbstractCegarLoop]: Abstraction has 5771 states and 11162 transitions. [2020-10-28 19:50:59,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:50:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5771 states and 11162 transitions. [2020-10-28 19:50:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:50:59,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:50:59,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:50:59,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:50:59,761 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:50:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:50:59,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1598402065, now seen corresponding path program 1 times [2020-10-28 19:50:59,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:50:59,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851880423] [2020-10-28 19:50:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:50:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:50:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:59,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:59,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:50:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:02,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:04,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:04,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:51:04,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 19:51:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:51:04,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:04,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 19:51:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:51:04,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:05,045 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:51:05,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:51:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:05,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:51:05,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:51:05,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:05,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:05,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:05,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:05,213 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:51:05,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:51:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:10,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 19:51:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:51:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:51:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:10,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:51:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:10,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:51:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:10,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:15,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:15,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:51:15,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:51:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:15,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:15,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-28 19:51:15,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851880423] [2020-10-28 19:51:15,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:51:15,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 19:51:15,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987104720] [2020-10-28 19:51:15,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:51:15,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:51:15,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:51:15,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:51:15,401 INFO L87 Difference]: Start difference. First operand 5771 states and 11162 transitions. Second operand 6 states. [2020-10-28 19:51:15,670 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:51:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:51:18,663 INFO L93 Difference]: Finished difference Result 20307 states and 46688 transitions. [2020-10-28 19:51:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:51:18,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-28 19:51:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:51:18,990 INFO L225 Difference]: With dead ends: 20307 [2020-10-28 19:51:18,990 INFO L226 Difference]: Without dead ends: 14543 [2020-10-28 19:51:19,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:51:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14543 states. [2020-10-28 19:51:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14543 to 11531. [2020-10-28 19:51:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11531 states. [2020-10-28 19:51:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11531 states to 11531 states and 26250 transitions. [2020-10-28 19:51:21,203 INFO L78 Accepts]: Start accepts. Automaton has 11531 states and 26250 transitions. Word has length 202 [2020-10-28 19:51:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:51:21,204 INFO L481 AbstractCegarLoop]: Abstraction has 11531 states and 26250 transitions. [2020-10-28 19:51:21,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:51:21,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11531 states and 26250 transitions. [2020-10-28 19:51:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:51:21,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:51:21,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:51:21,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:51:21,627 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:51:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:51:21,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1944740335, now seen corresponding path program 1 times [2020-10-28 19:51:21,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:51:21,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992344126] [2020-10-28 19:51:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:51:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:22,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:22,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:23,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:26,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:26,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:51:26,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:51:26,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:51:26,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:26,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 19:51:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:51:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:26,906 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:51:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:51:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:51:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:51:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:26,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:27,066 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:51:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:51:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:27,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:30,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:32,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 19:51:32,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:51:32,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:51:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:51:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 19:51:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:32,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:51:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:51:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:37,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:51:37,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:51:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:51:37,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:37,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:51:37,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:51:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:51:37,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 19:51:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 19:51:37,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992344126] [2020-10-28 19:51:37,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:51:37,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 19:51:37,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620132710] [2020-10-28 19:51:37,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:51:37,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:51:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:51:37,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:51:37,279 INFO L87 Difference]: Start difference. First operand 11531 states and 26250 transitions. Second operand 6 states. [2020-10-28 19:51:37,544 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:51:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:51:40,673 INFO L93 Difference]: Finished difference Result 33347 states and 91328 transitions. [2020-10-28 19:51:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:51:40,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-28 19:51:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:51:41,250 INFO L225 Difference]: With dead ends: 33347 [2020-10-28 19:51:41,251 INFO L226 Difference]: Without dead ends: 21823 [2020-10-28 19:51:41,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:51:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21823 states. [2020-10-28 19:51:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21823 to 17259. [2020-10-28 19:51:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17259 states. [2020-10-28 19:51:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17259 states to 17259 states and 44810 transitions. [2020-10-28 19:51:45,844 INFO L78 Accepts]: Start accepts. Automaton has 17259 states and 44810 transitions. Word has length 202 [2020-10-28 19:51:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:51:45,844 INFO L481 AbstractCegarLoop]: Abstraction has 17259 states and 44810 transitions. [2020-10-28 19:51:45,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:51:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 17259 states and 44810 transitions. [2020-10-28 19:51:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:51:46,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:51:46,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:51:46,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:51:46,637 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:51:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:51:46,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1484952435, now seen corresponding path program 1 times [2020-10-28 19:51:46,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:51:46,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437781944] [2020-10-28 19:51:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:51:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:47,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:51,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 19:51:51,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:51:51,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:51,929 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:51:51,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:51:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:51:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:51:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:52,085 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:51:52,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:51:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:57,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:51:57,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:51:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:51:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:57,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:51:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:51:57,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:57,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:51:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:51:57,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:51:57,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:51:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:51:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:51:57,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:51:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:51:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:51:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:51:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:51:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:51:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:51:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:51:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:01,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:02,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:52:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:52:02,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:52:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:52:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-28 19:52:02,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437781944] [2020-10-28 19:52:02,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:52:02,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 19:52:02,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594868077] [2020-10-28 19:52:02,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:52:02,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:52:02,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:52:02,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:52:02,276 INFO L87 Difference]: Start difference. First operand 17259 states and 44810 transitions. Second operand 6 states. [2020-10-28 19:52:02,539 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 19:52:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:52:10,874 INFO L93 Difference]: Finished difference Result 60595 states and 222992 transitions. [2020-10-28 19:52:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:52:10,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-10-28 19:52:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:52:12,983 INFO L225 Difference]: With dead ends: 60595 [2020-10-28 19:52:12,984 INFO L226 Difference]: Without dead ends: 43343 [2020-10-28 19:52:14,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 19:52:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43343 states. [2020-10-28 19:52:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43343 to 34507. [2020-10-28 19:52:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34507 states. [2020-10-28 19:52:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34507 states to 34507 states and 125994 transitions. [2020-10-28 19:52:33,031 INFO L78 Accepts]: Start accepts. Automaton has 34507 states and 125994 transitions. Word has length 202 [2020-10-28 19:52:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:52:33,031 INFO L481 AbstractCegarLoop]: Abstraction has 34507 states and 125994 transitions. [2020-10-28 19:52:33,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:52:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 34507 states and 125994 transitions. [2020-10-28 19:52:37,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 19:52:37,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:52:37,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 19:52:37,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:52:37,254 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:52:37,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:52:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash -181755021, now seen corresponding path program 1 times [2020-10-28 19:52:37,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:52:37,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340608631] [2020-10-28 19:52:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:52:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:37,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:39,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:39,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:40,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:40,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:41,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:42,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 19:52:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:52:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:42,537 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 19:52:42,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:52:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:42,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:52:42,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:52:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:52:42,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:42,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:52:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:52:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:52:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:42,705 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 19:52:42,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 19:52:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:46,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:52:46,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:52:46,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4143 [2020-10-28 19:52:46,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:46,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:52:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 19:52:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 19:52:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:52:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:46,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:52:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:52:46,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 19:52:46,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 19:52:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:46,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:46,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:48,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:52:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 19:52:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:52:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:52:50,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:52:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:52:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:52:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:52:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 19:52:50,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340608631] [2020-10-28 19:52:50,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 19:52:50,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 19:52:50,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180016063] [2020-10-28 19:52:50,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:52:50,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:52:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:52:50,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:52:50,828 INFO L87 Difference]: Start difference. First operand 34507 states and 125994 transitions. Second operand 6 states. [2020-10-28 19:52:51,088 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 168