/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_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:44:43,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:44:43,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:44:43,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:44:43,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:44:43,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:44:43,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:44:43,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:44:43,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:44:43,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:44:43,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:44:43,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:44:43,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:44:43,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:44:43,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:44:43,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:44:43,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:44:43,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:44:43,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:44:43,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:44:43,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:44:43,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:44:43,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:44:43,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:44:43,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:44:43,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:44:43,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:44:43,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:44:43,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:44:43,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:44:43,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:44:43,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:44:43,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:44:43,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:44:43,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:44:43,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:44:43,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:44:43,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:44:43,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:44:43,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:44:43,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:44:43,678 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 13:44:43,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:44:43,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:44:43,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:44:43,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:44:43,744 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:44:43,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:44:43,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:44:43,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:44:43,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:44:43,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:44:43,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:44:43,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:44:43,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:44:43,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:44:43,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:44:43,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:44:43,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:44:43,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:44:43,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:44:43,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:44:43,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:44:43,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:44:43,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:44:43,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:44:43,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:44:43,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:44:43,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:44:43,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:44:43,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:44:43,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:44:44,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:44:44,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:44:44,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:44:44,295 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:44:44,297 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:44:44,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label57.c [2020-10-28 13:44:44,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ed82fb3/0dc7891af46940d4aedc615df030e136/FLAGb80d1d7f8 [2020-10-28 13:44:45,379 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:44:45,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label57.c [2020-10-28 13:44:45,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ed82fb3/0dc7891af46940d4aedc615df030e136/FLAGb80d1d7f8 [2020-10-28 13:44:45,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ed82fb3/0dc7891af46940d4aedc615df030e136 [2020-10-28 13:44:45,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:44:45,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:44:45,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:44:45,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:44:45,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:44:45,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:44:45" (1/1) ... [2020-10-28 13:44:45,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d59320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:45, skipping insertion in model container [2020-10-28 13:44:45,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:44:45" (1/1) ... [2020-10-28 13:44:45,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:44:46,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:44:47,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:44:47,276 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:44:47,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:44:47,977 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:44:47,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47 WrapperNode [2020-10-28 13:44:47,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:44:47,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:44:47,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:44:47,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:44:47,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:47,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:48,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:48,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:48,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:48,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:48,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (1/1) ... [2020-10-28 13:44:48,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:44:48,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:44:48,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:44:48,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:44:48,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (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 13:44:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:44:48,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:44:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:44:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:44:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:44:48,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:44:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:44:48,356 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:44:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:44:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:44:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:44:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:44:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:44:48,357 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:44:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:44:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:44:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:44:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:44:48,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:44:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:44:48,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:44:57,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:44:57,807 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:44:57,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:44:57 BoogieIcfgContainer [2020-10-28 13:44:57,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:44:57,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:44:57,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:44:57,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:44:57,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:44:45" (1/3) ... [2020-10-28 13:44:57,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73517caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:44:57, skipping insertion in model container [2020-10-28 13:44:57,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:47" (2/3) ... [2020-10-28 13:44:57,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73517caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:44:57, skipping insertion in model container [2020-10-28 13:44:57,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:44:57" (3/3) ... [2020-10-28 13:44:57,824 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label57.c [2020-10-28 13:44:57,838 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:44:57,845 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:44:57,862 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:44:57,911 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:44:57,911 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:44:57,911 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:44:57,912 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:44:57,912 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:44:57,912 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:44:57,912 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:44:57,912 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:44:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:44:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 13:44:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:57,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:57,971 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash 568825922, now seen corresponding path program 1 times [2020-10-28 13:44:57,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:57,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869443462] [2020-10-28 13:44:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:58,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 13:44:58,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-28 13:44:58,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:58,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:44:58,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 13:44:58,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:44:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:58,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:58,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:58,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:58,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:44:58,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:58,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:58,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:44:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:58,948 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 13:44:58,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869443462] [2020-10-28 13:44:58,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:44:58,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:44:58,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719969709] [2020-10-28 13:44:58,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:44:58,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:58,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:44:58,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:44:58,979 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:45:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:13,656 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-28 13:45:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:13,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-28 13:45:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:13,688 INFO L225 Difference]: With dead ends: 1694 [2020-10-28 13:45:13,688 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 13:45:13,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 13:45:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-28 13:45:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-28 13:45:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-28 13:45:13,831 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 24 [2020-10-28 13:45:13,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:13,832 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-28 13:45:13,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:45:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-28 13:45:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 13:45:13,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:13,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:13,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:45:13,839 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:13,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:13,840 INFO L82 PathProgramCache]: Analyzing trace with hash 690498978, now seen corresponding path program 1 times [2020-10-28 13:45:13,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:13,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911568179] [2020-10-28 13:45:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:13,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:15,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:15,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:45:15,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-28 13:45:15,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:15,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:45:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:45:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:45:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:15,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:15,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:15,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:45:15,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:15,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:45:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:45:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:15,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:15,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:45:15,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:45:15,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:15,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:15,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:45:15,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:45:15,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:45:15,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911568179] [2020-10-28 13:45:15,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:45:15,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:45:15,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41983460] [2020-10-28 13:45:15,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:45:15,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:15,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:45:15,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:45:15,946 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-28 13:45:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:29,761 INFO L93 Difference]: Finished difference Result 2447 states and 3895 transitions. [2020-10-28 13:45:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:45:29,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-28 13:45:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:29,772 INFO L225 Difference]: With dead ends: 2447 [2020-10-28 13:45:29,772 INFO L226 Difference]: Without dead ends: 1461 [2020-10-28 13:45:29,776 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 13:45:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-10-28 13:45:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1433. [2020-10-28 13:45:29,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-10-28 13:45:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1859 transitions. [2020-10-28 13:45:29,829 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1859 transitions. Word has length 95 [2020-10-28 13:45:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:29,830 INFO L481 AbstractCegarLoop]: Abstraction has 1433 states and 1859 transitions. [2020-10-28 13:45:29,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:45:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1859 transitions. [2020-10-28 13:45:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 13:45:29,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:29,834 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:29,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:45:29,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:29,835 INFO L82 PathProgramCache]: Analyzing trace with hash -716268689, now seen corresponding path program 1 times [2020-10-28 13:45:29,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:29,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528131093] [2020-10-28 13:45:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:30,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:30,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:45:30,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-28 13:45:30,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:30,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:45:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:45:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:30,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:30,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:45:30,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:30,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:30,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:30,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:45:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:30,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:30,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:45:30,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:30,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:45:30,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:30,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:30,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:30,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:45:30,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:45:30,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528131093] [2020-10-28 13:45:30,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:30,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:30,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927150588] [2020-10-28 13:45:30,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:30,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:30,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:30,629 INFO L87 Difference]: Start difference. First operand 1433 states and 1859 transitions. Second operand 5 states. [2020-10-28 13:45:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:44,427 INFO L93 Difference]: Finished difference Result 3331 states and 4572 transitions. [2020-10-28 13:45:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:44,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-28 13:45:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:44,442 INFO L225 Difference]: With dead ends: 3331 [2020-10-28 13:45:44,442 INFO L226 Difference]: Without dead ends: 1891 [2020-10-28 13:45:44,448 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 13:45:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-10-28 13:45:44,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1882. [2020-10-28 13:45:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-10-28 13:45:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2300 transitions. [2020-10-28 13:45:44,519 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2300 transitions. Word has length 98 [2020-10-28 13:45:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:44,522 INFO L481 AbstractCegarLoop]: Abstraction has 1882 states and 2300 transitions. [2020-10-28 13:45:44,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:44,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2300 transitions. [2020-10-28 13:45:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-28 13:45:44,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:44,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 13:45:44,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:45:44,540 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:44,541 INFO L82 PathProgramCache]: Analyzing trace with hash -278546562, now seen corresponding path program 1 times [2020-10-28 13:45:44,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:44,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449019212] [2020-10-28 13:45:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:44,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:44,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:45,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-28 13:45:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-28 13:45:45,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:45,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:45:45,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:45:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:46,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:46,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:46,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:46,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:46,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:45:46,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:46,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:46,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:46,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:46,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:45:46,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:46,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:45:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:46,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:46,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:46,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:45:46,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:45:46,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:46,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:45:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:45:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:45:46,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449019212] [2020-10-28 13:45:46,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:46,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:45:46,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427443598] [2020-10-28 13:45:46,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:45:46,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:45:46,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:45:46,755 INFO L87 Difference]: Start difference. First operand 1882 states and 2300 transitions. Second operand 7 states. [2020-10-28 13:46:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:01,895 INFO L93 Difference]: Finished difference Result 4687 states and 5939 transitions. [2020-10-28 13:46:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:46:01,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-28 13:46:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:01,916 INFO L225 Difference]: With dead ends: 4687 [2020-10-28 13:46:01,916 INFO L226 Difference]: Without dead ends: 3244 [2020-10-28 13:46:01,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:46:01,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2020-10-28 13:46:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2795. [2020-10-28 13:46:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-28 13:46:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3422 transitions. [2020-10-28 13:46:02,055 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3422 transitions. Word has length 184 [2020-10-28 13:46:02,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:02,057 INFO L481 AbstractCegarLoop]: Abstraction has 2795 states and 3422 transitions. [2020-10-28 13:46:02,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:46:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3422 transitions. [2020-10-28 13:46:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-28 13:46:02,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:02,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:46:02,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:46:02,061 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:02,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash -972949478, now seen corresponding path program 1 times [2020-10-28 13:46:02,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:02,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216892022] [2020-10-28 13:46:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:03,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:06,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:06,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-28 13:46:06,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:46:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4039 [2020-10-28 13:46:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:06,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:46:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:46:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:06,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:06,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:06,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:06,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:46:06,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:06,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:06,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:06,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:06,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:06,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:46:06,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:06,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:06,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:06,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:06,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:46:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:46:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:06,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:06,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:46:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:46:06,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216892022] [2020-10-28 13:46:06,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:06,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:46:06,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986274158] [2020-10-28 13:46:06,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:46:06,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:06,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:46:06,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:46:06,793 INFO L87 Difference]: Start difference. First operand 2795 states and 3422 transitions. Second operand 5 states. [2020-10-28 13:46:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:23,229 INFO L93 Difference]: Finished difference Result 6509 states and 8283 transitions. [2020-10-28 13:46:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:46:23,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-28 13:46:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:23,261 INFO L225 Difference]: With dead ends: 6509 [2020-10-28 13:46:23,261 INFO L226 Difference]: Without dead ends: 3703 [2020-10-28 13:46:23,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:46:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2020-10-28 13:46:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3695. [2020-10-28 13:46:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3695 states. [2020-10-28 13:46:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4557 transitions. [2020-10-28 13:46:23,405 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4557 transitions. Word has length 186 [2020-10-28 13:46:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:23,406 INFO L481 AbstractCegarLoop]: Abstraction has 3695 states and 4557 transitions. [2020-10-28 13:46:23,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:46:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4557 transitions. [2020-10-28 13:46:23,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 13:46:23,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:23,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:23,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:46:23,409 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:23,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:23,410 INFO L82 PathProgramCache]: Analyzing trace with hash 537942218, now seen corresponding path program 1 times [2020-10-28 13:46:23,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:23,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042928515] [2020-10-28 13:46:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:23,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:28,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 13:46:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:46:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:46:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:46:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:46:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:46:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:28,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:46:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:28,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:28,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:46:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:29,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:29,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:46:29,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:29,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 13:46:29,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:29,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:29,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:29,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:46:29,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 13:46:29,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042928515] [2020-10-28 13:46:29,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:29,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:46:29,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288573277] [2020-10-28 13:46:29,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:46:29,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:46:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:46:29,343 INFO L87 Difference]: Start difference. First operand 3695 states and 4557 transitions. Second operand 5 states. [2020-10-28 13:46:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:41,624 INFO L93 Difference]: Finished difference Result 6956 states and 8682 transitions. [2020-10-28 13:46:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:46:41,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-28 13:46:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:41,647 INFO L225 Difference]: With dead ends: 6956 [2020-10-28 13:46:41,648 INFO L226 Difference]: Without dead ends: 3700 [2020-10-28 13:46:41,656 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 13:46:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2020-10-28 13:46:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3695. [2020-10-28 13:46:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3695 states. [2020-10-28 13:46:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4548 transitions. [2020-10-28 13:46:41,762 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4548 transitions. Word has length 194 [2020-10-28 13:46:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:41,762 INFO L481 AbstractCegarLoop]: Abstraction has 3695 states and 4548 transitions. [2020-10-28 13:46:41,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:46:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4548 transitions. [2020-10-28 13:46:41,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 13:46:41,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:41,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:41,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:46:41,767 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:41,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1531087280, now seen corresponding path program 1 times [2020-10-28 13:46:41,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:41,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839911831] [2020-10-28 13:46:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:43,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:43,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:46:43,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1287 [2020-10-28 13:46:43,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:43,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:46:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:46:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:46:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:43,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:43,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:43,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:46:43,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:43,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:43,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:43,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:43,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:43,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:46:43,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:43,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:46:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:43,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:43,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:46:43,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 13:46:43,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:43,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:43,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:46:43,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:46:43,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839911831] [2020-10-28 13:46:43,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:43,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:46:43,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845040899] [2020-10-28 13:46:43,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:46:43,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:43,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:46:43,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:46:43,904 INFO L87 Difference]: Start difference. First operand 3695 states and 4548 transitions. Second operand 5 states. [2020-10-28 13:46:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:57,506 INFO L93 Difference]: Finished difference Result 6956 states and 8664 transitions. [2020-10-28 13:46:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:46:57,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-28 13:46:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:57,532 INFO L225 Difference]: With dead ends: 6956 [2020-10-28 13:46:57,533 INFO L226 Difference]: Without dead ends: 3700 [2020-10-28 13:46:57,542 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 13:46:57,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3700 states. [2020-10-28 13:46:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3700 to 3695. [2020-10-28 13:46:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3695 states. [2020-10-28 13:46:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 4539 transitions. [2020-10-28 13:46:57,696 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 4539 transitions. Word has length 197 [2020-10-28 13:46:57,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:57,697 INFO L481 AbstractCegarLoop]: Abstraction has 3695 states and 4539 transitions. [2020-10-28 13:46:57,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:46:57,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 4539 transitions. [2020-10-28 13:46:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 13:46:57,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:57,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:46:57,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:46:57,704 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:57,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1756299039, now seen corresponding path program 1 times [2020-10-28 13:46:57,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:57,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372575832] [2020-10-28 13:46:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:01,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:01,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 13:47:01,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:47:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4053 [2020-10-28 13:47:01,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:01,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:01,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:47:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:47:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:02,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:02,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:02,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:02,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:47:02,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:02,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:02,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:02,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:02,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:02,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:02,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:47:02,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:02,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:47:02,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:02,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:47:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:47:02,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372575832] [2020-10-28 13:47:02,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:02,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:47:02,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261605091] [2020-10-28 13:47:02,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:47:02,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:02,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:47:02,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:47:02,491 INFO L87 Difference]: Start difference. First operand 3695 states and 4539 transitions. Second operand 5 states. [2020-10-28 13:47:06,437 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:47:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:19,480 INFO L93 Difference]: Finished difference Result 8277 states and 10209 transitions. [2020-10-28 13:47:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:47:19,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-28 13:47:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:19,509 INFO L225 Difference]: With dead ends: 8277 [2020-10-28 13:47:19,510 INFO L226 Difference]: Without dead ends: 5021 [2020-10-28 13:47:19,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:47:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2020-10-28 13:47:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 4582. [2020-10-28 13:47:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4582 states. [2020-10-28 13:47:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 5563 transitions. [2020-10-28 13:47:19,663 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 5563 transitions. Word has length 252 [2020-10-28 13:47:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:19,664 INFO L481 AbstractCegarLoop]: Abstraction has 4582 states and 5563 transitions. [2020-10-28 13:47:19,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:47:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 5563 transitions. [2020-10-28 13:47:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 13:47:19,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:19,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:47:19,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:47:19,671 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:19,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:19,672 INFO L82 PathProgramCache]: Analyzing trace with hash -313031654, now seen corresponding path program 1 times [2020-10-28 13:47:19,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:19,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548384839] [2020-10-28 13:47:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:24,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:24,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-28 13:47:24,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:47:24,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 13:47:24,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:24,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:24,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:47:24,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:47:24,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:25,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:25,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:25,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:47:25,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:25,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:25,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:25,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:25,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:25,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:47:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:25,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:25,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:47:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:47:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:25,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:47:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:47:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:25,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:25,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:47:25,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:47:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:47:25,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548384839] [2020-10-28 13:47:25,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:25,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:47:25,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194817734] [2020-10-28 13:47:25,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:47:25,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:25,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:47:25,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:47:25,667 INFO L87 Difference]: Start difference. First operand 4582 states and 5563 transitions. Second operand 7 states. [2020-10-28 13:47:32,271 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:47:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:47,249 INFO L93 Difference]: Finished difference Result 11116 states and 13714 transitions. [2020-10-28 13:47:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:47:47,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-28 13:47:47,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:47,275 INFO L225 Difference]: With dead ends: 11116 [2020-10-28 13:47:47,275 INFO L226 Difference]: Without dead ends: 6102 [2020-10-28 13:47:47,285 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 13:47:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6102 states. [2020-10-28 13:47:47,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6102 to 6039. [2020-10-28 13:47:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6039 states. [2020-10-28 13:47:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6039 states to 6039 states and 7481 transitions. [2020-10-28 13:47:47,433 INFO L78 Accepts]: Start accepts. Automaton has 6039 states and 7481 transitions. Word has length 265 [2020-10-28 13:47:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:47,433 INFO L481 AbstractCegarLoop]: Abstraction has 6039 states and 7481 transitions. [2020-10-28 13:47:47,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:47:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6039 states and 7481 transitions. [2020-10-28 13:47:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 13:47:47,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:47,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:47:47,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:47:47,441 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:47,441 INFO L82 PathProgramCache]: Analyzing trace with hash -844991532, now seen corresponding path program 1 times [2020-10-28 13:47:47,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:47,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422875806] [2020-10-28 13:47:47,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:50,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 13:47:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:47:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2988 [2020-10-28 13:47:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:50,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:47:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:47:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:50,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:50,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:50,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:50,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:50,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:50,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:50,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:50,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:47:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:47:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:51,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:51,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:47:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:47:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:47:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:51,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:51,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:47:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:47:51,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422875806] [2020-10-28 13:47:51,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:51,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:47:51,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428825583] [2020-10-28 13:47:51,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:47:51,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:51,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:47:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:47:51,163 INFO L87 Difference]: Start difference. First operand 6039 states and 7481 transitions. Second operand 5 states. [2020-10-28 13:48:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:07,855 INFO L93 Difference]: Finished difference Result 16087 states and 20513 transitions. [2020-10-28 13:48:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:48:07,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-28 13:48:07,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:07,892 INFO L225 Difference]: With dead ends: 16087 [2020-10-28 13:48:07,892 INFO L226 Difference]: Without dead ends: 9153 [2020-10-28 13:48:07,909 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 13:48:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2020-10-28 13:48:08,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 9137. [2020-10-28 13:48:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9137 states. [2020-10-28 13:48:08,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9137 states to 9137 states and 11014 transitions. [2020-10-28 13:48:08,181 INFO L78 Accepts]: Start accepts. Automaton has 9137 states and 11014 transitions. Word has length 268 [2020-10-28 13:48:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:08,182 INFO L481 AbstractCegarLoop]: Abstraction has 9137 states and 11014 transitions. [2020-10-28 13:48:08,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:48:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9137 states and 11014 transitions. [2020-10-28 13:48:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-28 13:48:08,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:08,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:48:08,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:48:08,189 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:08,189 INFO L82 PathProgramCache]: Analyzing trace with hash -467519448, now seen corresponding path program 1 times [2020-10-28 13:48:08,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:08,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337982228] [2020-10-28 13:48:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:08,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:08,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:10,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:10,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-28 13:48:10,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:48:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-28 13:48:10,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:10,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:48:10,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:48:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:10,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:10,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:48:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:48:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:10,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:48:10,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:48:10,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:10,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:48:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:48:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:11,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:11,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:48:11,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:48:11,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:48:11,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:11,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:11,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:48:11,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:48:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:11,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:11,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:11,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:48:11,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 196 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 13:48:11,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337982228] [2020-10-28 13:48:11,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:48:11,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:48:11,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907518056] [2020-10-28 13:48:11,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:11,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:11,359 INFO L87 Difference]: Start difference. First operand 9137 states and 11014 transitions. Second operand 7 states. [2020-10-28 13:48:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:27,846 INFO L93 Difference]: Finished difference Result 18733 states and 22639 transitions. [2020-10-28 13:48:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:48:27,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-28 13:48:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:27,881 INFO L225 Difference]: With dead ends: 18733 [2020-10-28 13:48:27,881 INFO L226 Difference]: Without dead ends: 9602 [2020-10-28 13:48:27,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:48:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2020-10-28 13:48:28,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 9579. [2020-10-28 13:48:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9579 states. [2020-10-28 13:48:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 11543 transitions. [2020-10-28 13:48:28,139 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 11543 transitions. Word has length 274 [2020-10-28 13:48:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:28,140 INFO L481 AbstractCegarLoop]: Abstraction has 9579 states and 11543 transitions. [2020-10-28 13:48:28,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:48:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 11543 transitions. [2020-10-28 13:48:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 13:48:28,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:28,148 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:28,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:48:28,149 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash 206999764, now seen corresponding path program 1 times [2020-10-28 13:48:28,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:28,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196693864] [2020-10-28 13:48:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking...