/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:36:21,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:36:21,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:36:21,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:36:21,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:36:21,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:36:21,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:36:21,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:36:21,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:36:21,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:36:21,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:36:21,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:36:21,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:36:21,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:36:21,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:36:21,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:36:21,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:36:21,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:36:21,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:36:21,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:36:21,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:36:21,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:36:21,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:36:21,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:36:21,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:36:21,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:36:21,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:36:21,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:36:21,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:36:21,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:36:21,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:36:21,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:36:21,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:36:21,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:36:21,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:36:21,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:36:21,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:36:21,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:36:21,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:36:21,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:36:21,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:36:21,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:36:21,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:36:21,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:36:21,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:36:21,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:36:21,458 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:36:21,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:36:21,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:36:21,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:36:21,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:36:21,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:36:21,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:36:21,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:36:21,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:36:21,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:36:21,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:36:21,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:36:21,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:36:21,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:36:21,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:36:21,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:36:21,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:36:21,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:36:21,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:36:21,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:36:21,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:36:21,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:36:21,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:36:21,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:36:21,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:36:21,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:36:21,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:36:22,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:36:22,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:36:22,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:36:22,043 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:36:22,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label27.c [2020-10-28 13:36:22,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e611ad6/bfdb448721fa4ce8811b968c1d21d724/FLAG681a26ef5 [2020-10-28 13:36:23,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:36:23,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label27.c [2020-10-28 13:36:23,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e611ad6/bfdb448721fa4ce8811b968c1d21d724/FLAG681a26ef5 [2020-10-28 13:36:23,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2e611ad6/bfdb448721fa4ce8811b968c1d21d724 [2020-10-28 13:36:23,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:36:23,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:36:23,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:36:23,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:36:23,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:36:23,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:36:23" (1/1) ... [2020-10-28 13:36:23,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d288e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:23, skipping insertion in model container [2020-10-28 13:36:23,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:36:23" (1/1) ... [2020-10-28 13:36:23,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:36:23,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:36:24,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:36:24,922 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:36:25,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:36:25,432 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:36:25,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25 WrapperNode [2020-10-28 13:36:25,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:36:25,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:36:25,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:36:25,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:36:25,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... [2020-10-28 13:36:25,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:36:25,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:36:25,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:36:25,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:36:25,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:36:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:36:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:36:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:36:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:36:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:36:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:36:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:36:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:36:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:36:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:36:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:36:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:36:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:36:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:36:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:36:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:36:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:36:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:36:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:36:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:36:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:36:35,387 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:36:35,387 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:36:35,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:36:35 BoogieIcfgContainer [2020-10-28 13:36:35,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:36:35,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:36:35,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:36:35,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:36:35,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:36:23" (1/3) ... [2020-10-28 13:36:35,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db2d57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:36:35, skipping insertion in model container [2020-10-28 13:36:35,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:36:25" (2/3) ... [2020-10-28 13:36:35,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db2d57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:36:35, skipping insertion in model container [2020-10-28 13:36:35,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:36:35" (3/3) ... [2020-10-28 13:36:35,401 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label27.c [2020-10-28 13:36:35,414 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:36:35,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:36:35,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:36:35,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:36:35,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:36:35,470 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:36:35,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:36:35,470 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:36:35,470 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:36:35,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:36:35,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:36:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:36:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 13:36:35,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:35,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:35,517 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash -841172446, now seen corresponding path program 1 times [2020-10-28 13:36:35,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:35,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112995091] [2020-10-28 13:36:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-28 13:36:36,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-28 13:36:36,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:36,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:36,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:36:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:36:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 13:36:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:36:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:36:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:36,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:36:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:36:36,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112995091] [2020-10-28 13:36:36,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:36:36,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:36:36,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013115723] [2020-10-28 13:36:36,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:36:36,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:36,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:36:36,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:36:36,764 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:36:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:49,684 INFO L93 Difference]: Finished difference Result 1734 states and 3143 transitions. [2020-10-28 13:36:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:49,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-28 13:36:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:49,717 INFO L225 Difference]: With dead ends: 1734 [2020-10-28 13:36:49,717 INFO L226 Difference]: Without dead ends: 1048 [2020-10-28 13:36:49,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:36:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-10-28 13:36:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1029. [2020-10-28 13:36:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-10-28 13:36:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1764 transitions. [2020-10-28 13:36:49,865 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1764 transitions. Word has length 48 [2020-10-28 13:36:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:49,866 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1764 transitions. [2020-10-28 13:36:49,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:36:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1764 transitions. [2020-10-28 13:36:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 13:36:49,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:49,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:49,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:36:49,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash -120909466, now seen corresponding path program 1 times [2020-10-28 13:36:49,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:49,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437980123] [2020-10-28 13:36:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:51,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:36:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:36:51,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1722 [2020-10-28 13:36:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:51,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:36:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:36:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:36:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:36:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:51,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:51,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:51,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:51,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:36:51,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:51,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:36:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:36:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:52,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:52,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:36:52,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 13:36:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:52,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:36:52,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:36:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:36:52,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437980123] [2020-10-28 13:36:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:36:52,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:36:52,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760700746] [2020-10-28 13:36:52,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:36:52,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:36:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:52,316 INFO L87 Difference]: Start difference. First operand 1029 states and 1764 transitions. Second operand 7 states. [2020-10-28 13:37:13,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:13,648 INFO L93 Difference]: Finished difference Result 3026 states and 5272 transitions. [2020-10-28 13:37:13,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:37:13,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-28 13:37:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:13,667 INFO L225 Difference]: With dead ends: 3026 [2020-10-28 13:37:13,667 INFO L226 Difference]: Without dead ends: 2003 [2020-10-28 13:37:13,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:37:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-10-28 13:37:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1952. [2020-10-28 13:37:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-28 13:37:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2950 transitions. [2020-10-28 13:37:13,756 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2950 transitions. Word has length 117 [2020-10-28 13:37:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:13,757 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2950 transitions. [2020-10-28 13:37:13,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:37:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2950 transitions. [2020-10-28 13:37:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 13:37:13,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:13,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:13,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:37:13,761 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:13,762 INFO L82 PathProgramCache]: Analyzing trace with hash -421519870, now seen corresponding path program 1 times [2020-10-28 13:37:13,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:13,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483756614] [2020-10-28 13:37:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:14,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:15,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:15,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 13:37:15,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:37:15,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-10-28 13:37:15,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:15,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:37:15,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:37:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:15,479 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:37:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:15,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:15,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:15,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:15,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:37:15,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:15,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:15,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:37:15,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:15,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:15,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:15,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:15,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:37:15,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 13:37:15,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:15,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:37:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:37:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:37:15,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483756614] [2020-10-28 13:37:15,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:37:15,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:37:15,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044270879] [2020-10-28 13:37:15,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:37:15,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:15,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:37:15,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:15,939 INFO L87 Difference]: Start difference. First operand 1952 states and 2950 transitions. Second operand 7 states. [2020-10-28 13:37:33,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:33,034 INFO L93 Difference]: Finished difference Result 5721 states and 8786 transitions. [2020-10-28 13:37:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:37:33,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 13:37:33,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:33,061 INFO L225 Difference]: With dead ends: 5721 [2020-10-28 13:37:33,061 INFO L226 Difference]: Without dead ends: 3775 [2020-10-28 13:37:33,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:37:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2020-10-28 13:37:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 2859. [2020-10-28 13:37:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2859 states. [2020-10-28 13:37:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3907 transitions. [2020-10-28 13:37:33,202 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3907 transitions. Word has length 119 [2020-10-28 13:37:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:33,202 INFO L481 AbstractCegarLoop]: Abstraction has 2859 states and 3907 transitions. [2020-10-28 13:37:33,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:37:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3907 transitions. [2020-10-28 13:37:33,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 13:37:33,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:33,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:33,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:37:33,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:33,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1296119857, now seen corresponding path program 1 times [2020-10-28 13:37:33,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:33,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338303290] [2020-10-28 13:37:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:33,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:34,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 13:37:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:34,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-28 13:37:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:34,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:37:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 13:37:34,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:34,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:34,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:37:34,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:34,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:34,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:34,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:37:34,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:37:34,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:34,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:37:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:37:34,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338303290] [2020-10-28 13:37:34,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:34,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:37:34,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127996400] [2020-10-28 13:37:34,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:34,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:34,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:34,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:34,751 INFO L87 Difference]: Start difference. First operand 2859 states and 3907 transitions. Second operand 5 states. [2020-10-28 13:37:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:54,512 INFO L93 Difference]: Finished difference Result 7505 states and 10473 transitions. [2020-10-28 13:37:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:54,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-28 13:37:54,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:54,543 INFO L225 Difference]: With dead ends: 7505 [2020-10-28 13:37:54,544 INFO L226 Difference]: Without dead ends: 3758 [2020-10-28 13:37:54,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:37:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2020-10-28 13:37:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3748. [2020-10-28 13:37:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3748 states. [2020-10-28 13:37:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 4803 transitions. [2020-10-28 13:37:54,730 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 4803 transitions. Word has length 122 [2020-10-28 13:37:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:54,731 INFO L481 AbstractCegarLoop]: Abstraction has 3748 states and 4803 transitions. [2020-10-28 13:37:54,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:37:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 4803 transitions. [2020-10-28 13:37:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 13:37:54,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:54,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:54,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:37:54,746 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1893493410, now seen corresponding path program 1 times [2020-10-28 13:37:54,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:54,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617934317] [2020-10-28 13:37:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 13:37:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1665 [2020-10-28 13:37:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:37:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:37:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:56,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:56,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:56,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:37:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:56,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:56,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:56,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:56,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:37:56,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:56,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:37:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:57,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:57,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:37:57,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:57,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:37:57,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:57,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:57,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:37:57,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:37:57,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:37:57,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617934317] [2020-10-28 13:37:57,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:57,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:37:57,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394747020] [2020-10-28 13:37:57,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:37:57,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:57,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:37:57,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:57,289 INFO L87 Difference]: Start difference. First operand 3748 states and 4803 transitions. Second operand 7 states. [2020-10-28 13:38:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:12,074 INFO L93 Difference]: Finished difference Result 10234 states and 13692 transitions. [2020-10-28 13:38:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:38:12,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-28 13:38:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:12,113 INFO L225 Difference]: With dead ends: 10234 [2020-10-28 13:38:12,113 INFO L226 Difference]: Without dead ends: 6492 [2020-10-28 13:38:12,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:38:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2020-10-28 13:38:12,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 6484. [2020-10-28 13:38:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6484 states. [2020-10-28 13:38:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6484 states to 6484 states and 8305 transitions. [2020-10-28 13:38:12,313 INFO L78 Accepts]: Start accepts. Automaton has 6484 states and 8305 transitions. Word has length 208 [2020-10-28 13:38:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:12,314 INFO L481 AbstractCegarLoop]: Abstraction has 6484 states and 8305 transitions. [2020-10-28 13:38:12,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:38:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states and 8305 transitions. [2020-10-28 13:38:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 13:38:12,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:12,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:38:12,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:38:12,320 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash -243851728, now seen corresponding path program 1 times [2020-10-28 13:38:12,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:12,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99725793] [2020-10-28 13:38:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:12,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:17,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:17,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-28 13:38:17,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:38:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:38:17,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:17,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:38:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:38:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 13:38:17,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:17,652 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:38:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:17,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:17,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:17,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:17,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:17,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:38:17,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:17,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:38:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:17,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:18,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:18,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:38:18,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:18,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-28 13:38:18,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:18,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:18,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:38:18,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:38:18,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99725793] [2020-10-28 13:38:18,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:18,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:38:18,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789455346] [2020-10-28 13:38:18,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:38:18,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:18,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:38:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:38:18,294 INFO L87 Difference]: Start difference. First operand 6484 states and 8305 transitions. Second operand 5 states. [2020-10-28 13:38:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:30,002 INFO L93 Difference]: Finished difference Result 13401 states and 17412 transitions. [2020-10-28 13:38:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:38:30,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-28 13:38:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:30,048 INFO L225 Difference]: With dead ends: 13401 [2020-10-28 13:38:30,049 INFO L226 Difference]: Without dead ends: 6923 [2020-10-28 13:38:30,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:38:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2020-10-28 13:38:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 6484. [2020-10-28 13:38:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6484 states. [2020-10-28 13:38:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6484 states to 6484 states and 8305 transitions. [2020-10-28 13:38:30,267 INFO L78 Accepts]: Start accepts. Automaton has 6484 states and 8305 transitions. Word has length 221 [2020-10-28 13:38:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:30,268 INFO L481 AbstractCegarLoop]: Abstraction has 6484 states and 8305 transitions. [2020-10-28 13:38:30,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:38:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states and 8305 transitions. [2020-10-28 13:38:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-28 13:38:30,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:30,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:38:30,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:38:30,277 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1623448698, now seen corresponding path program 1 times [2020-10-28 13:38:30,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:30,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872724369] [2020-10-28 13:38:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:30,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:35,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-28 13:38:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:38:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:38:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:35,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:38:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:38:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:35,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:35,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:38:35,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:35,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:35,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:35,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:35,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:35,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:38:35,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:35,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:35,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:35,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:35,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:35,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:35,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:38:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:38:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:35,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:38:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:35,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:38:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:36,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:36,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:38:36,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:38:36,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:36,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:36,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:38:36,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:38:36,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:38:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:38:36,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872724369] [2020-10-28 13:38:36,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:36,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:38:36,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947218822] [2020-10-28 13:38:36,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:38:36,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:36,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:38:36,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:38:36,252 INFO L87 Difference]: Start difference. First operand 6484 states and 8305 transitions. Second operand 7 states. [2020-10-28 13:38:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:56,422 INFO L93 Difference]: Finished difference Result 15886 states and 21121 transitions. [2020-10-28 13:38:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:38:56,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-28 13:38:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:56,457 INFO L225 Difference]: With dead ends: 15886 [2020-10-28 13:38:56,458 INFO L226 Difference]: Without dead ends: 8452 [2020-10-28 13:38:56,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:38:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8452 states. [2020-10-28 13:38:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8452 to 8401. [2020-10-28 13:38:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8401 states. [2020-10-28 13:38:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8401 states to 8401 states and 10990 transitions. [2020-10-28 13:38:56,684 INFO L78 Accepts]: Start accepts. Automaton has 8401 states and 10990 transitions. Word has length 289 [2020-10-28 13:38:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:56,685 INFO L481 AbstractCegarLoop]: Abstraction has 8401 states and 10990 transitions. [2020-10-28 13:38:56,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:38:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8401 states and 10990 transitions. [2020-10-28 13:38:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-28 13:38:56,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:56,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:38:56,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:38:56,693 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2134696396, now seen corresponding path program 1 times [2020-10-28 13:38:56,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:56,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883901222] [2020-10-28 13:38:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:56,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-28 13:39:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:39:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4560 [2020-10-28 13:39:01,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:39:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:39:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 13:39:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:01,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:01,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:39:01,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:01,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:01,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:39:01,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:39:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:39:01,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:01,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:39:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:39:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:01,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:01,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:01,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:39:01,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:39:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:39:01,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:02,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:02,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:39:02,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:39:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:39:02,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883901222] [2020-10-28 13:39:02,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:02,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:02,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501958649] [2020-10-28 13:39:02,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:02,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:02,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:02,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:02,129 INFO L87 Difference]: Start difference. First operand 8401 states and 10990 transitions. Second operand 5 states. [2020-10-28 13:39:14,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:14,536 INFO L93 Difference]: Finished difference Result 24268 states and 32600 transitions. [2020-10-28 13:39:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:14,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 292 [2020-10-28 13:39:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:14,592 INFO L225 Difference]: With dead ends: 24268 [2020-10-28 13:39:14,592 INFO L226 Difference]: Without dead ends: 14984 [2020-10-28 13:39:14,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:39:14,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14984 states. [2020-10-28 13:39:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14984 to 14980. [2020-10-28 13:39:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14980 states. [2020-10-28 13:39:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14980 states to 14980 states and 18577 transitions. [2020-10-28 13:39:15,039 INFO L78 Accepts]: Start accepts. Automaton has 14980 states and 18577 transitions. Word has length 292 [2020-10-28 13:39:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:15,039 INFO L481 AbstractCegarLoop]: Abstraction has 14980 states and 18577 transitions. [2020-10-28 13:39:15,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14980 states and 18577 transitions. [2020-10-28 13:39:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-28 13:39:15,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:15,050 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:39:15,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:39:15,051 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:15,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:15,051 INFO L82 PathProgramCache]: Analyzing trace with hash -912697223, now seen corresponding path program 1 times [2020-10-28 13:39:15,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:15,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899008568] [2020-10-28 13:39:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:15,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:19,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-28 13:39:19,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:39:19,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4141 [2020-10-28 13:39:19,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:19,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:39:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:39:19,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:39:19,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:19,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:19,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:19,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:39:19,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:39:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:19,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:39:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:39:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:19,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:39:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:19,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:19,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:39:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:19,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:39:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:19,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:19,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:39:19,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:39:19,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 13:39:19,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:19,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:19,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:39:19,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 126 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 13:39:20,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899008568] [2020-10-28 13:39:20,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:20,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:39:20,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567723775] [2020-10-28 13:39:20,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:39:20,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:20,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:39:20,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:39:20,011 INFO L87 Difference]: Start difference. First operand 14980 states and 18577 transitions. Second operand 5 states. [2020-10-28 13:39:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:39:32,075 INFO L93 Difference]: Finished difference Result 37021 states and 47383 transitions. [2020-10-28 13:39:32,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:39:32,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-28 13:39:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:39:32,161 INFO L225 Difference]: With dead ends: 37021 [2020-10-28 13:39:32,162 INFO L226 Difference]: Without dead ends: 22047 [2020-10-28 13:39:32,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:39:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22047 states. [2020-10-28 13:39:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22047 to 20729. [2020-10-28 13:39:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20729 states. [2020-10-28 13:39:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20729 states to 20729 states and 26152 transitions. [2020-10-28 13:39:32,820 INFO L78 Accepts]: Start accepts. Automaton has 20729 states and 26152 transitions. Word has length 332 [2020-10-28 13:39:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:39:32,821 INFO L481 AbstractCegarLoop]: Abstraction has 20729 states and 26152 transitions. [2020-10-28 13:39:32,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:39:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20729 states and 26152 transitions. [2020-10-28 13:39:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-28 13:39:32,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:39:32,839 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:39:32,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:39:32,839 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:39:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:39:32,840 INFO L82 PathProgramCache]: Analyzing trace with hash -415787969, now seen corresponding path program 1 times [2020-10-28 13:39:32,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:39:32,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481154525] [2020-10-28 13:39:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:39:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:33,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:33,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:35,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:35,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-28 13:39:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:39:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2399 [2020-10-28 13:39:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:35,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 13:39:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:39:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 400 [2020-10-28 13:39:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:39:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:35,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:39:35,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:39:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:39:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:39:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:39:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:39:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:36,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-28 13:39:36,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-28 13:39:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:36,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:39:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:39:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-28 13:39:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:39:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:39:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:39:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:39:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:39:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:39:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:39:36,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481154525] [2020-10-28 13:39:36,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:39:36,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:39:36,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985529745] [2020-10-28 13:39:36,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:39:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:39:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:39:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:39:36,972 INFO L87 Difference]: Start difference. First operand 20729 states and 26152 transitions. Second operand 8 states. [2020-10-28 13:39:43,699 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:40:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:40:01,156 INFO L93 Difference]: Finished difference Result 53776 states and 67954 transitions. [2020-10-28 13:40:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:40:01,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 395 [2020-10-28 13:40:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:40:01,288 INFO L225 Difference]: With dead ends: 53776 [2020-10-28 13:40:01,289 INFO L226 Difference]: Without dead ends: 32165 [2020-10-28 13:40:01,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:40:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32165 states. [2020-10-28 13:40:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32165 to 30397. [2020-10-28 13:40:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30397 states. [2020-10-28 13:40:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30397 states to 30397 states and 38061 transitions. [2020-10-28 13:40:02,270 INFO L78 Accepts]: Start accepts. Automaton has 30397 states and 38061 transitions. Word has length 395 [2020-10-28 13:40:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:40:02,271 INFO L481 AbstractCegarLoop]: Abstraction has 30397 states and 38061 transitions. [2020-10-28 13:40:02,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:40:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30397 states and 38061 transitions. [2020-10-28 13:40:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-10-28 13:40:02,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:40:02,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:40:02,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:40:02,336 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:40:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:40:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash 413709632, now seen corresponding path program 1 times [2020-10-28 13:40:02,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:40:02,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270259826] [2020-10-28 13:40:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:40:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:07,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:07,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-28 13:40:07,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 349 [2020-10-28 13:40:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:40:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:07,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:07,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:07,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:40:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:07,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:40:07,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:07,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:40:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:40:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:40:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:08,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 13:40:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:08,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:08,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-28 13:40:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:40:08,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:40:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:40:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:40:08,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:40:08,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 13:40:08,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:40:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 13:40:08,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:40:08,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:40:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:40:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:40:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:40:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0