/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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:44:33,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:44:33,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:44:33,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:44:33,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:44:33,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:44:33,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:44:33,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:44:33,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:44:33,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:44:33,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:44:33,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:44:33,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:44:33,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:44:33,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:44:33,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:44:33,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:44:33,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:44:33,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:44:33,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:44:33,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:44:33,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:44:33,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:44:33,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:44:33,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:44:33,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:44:33,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:44:33,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:44:33,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:44:33,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:44:33,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:44:33,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:44:33,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:44:33,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:44:33,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:44:33,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:44:33,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:44:33,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:44:33,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:44:33,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:44:33,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:44:33,859 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 13:44:33,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:44:33,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:44:33,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:44:33,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:44:33,912 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:44:33,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:44:33,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:44:33,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:44:33,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:44:33,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:44:33,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:44:33,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:44:33,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:44:33,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:44:33,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:44:33,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:44:33,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:44:33,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:44:33,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:44:33,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:44:33,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:44:33,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:44:33,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:44:33,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:44:33,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:44:33,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:44:33,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:44:33,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:44:33,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:44:33,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:44:34,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:44:34,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:44:34,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:44:34,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:44:34,404 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:44:34,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2020-10-28 13:44:34,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ad7f9319/cc8f009ccf444fb7807d4a1c0db91095/FLAGfefe3bf16 [2020-10-28 13:44:35,288 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:44:35,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label56.c [2020-10-28 13:44:35,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ad7f9319/cc8f009ccf444fb7807d4a1c0db91095/FLAGfefe3bf16 [2020-10-28 13:44:35,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ad7f9319/cc8f009ccf444fb7807d4a1c0db91095 [2020-10-28 13:44:35,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:44:35,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:44:35,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:44:35,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:44:35,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:44:35,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:44:35" (1/1) ... [2020-10-28 13:44:35,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4301bab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:35, skipping insertion in model container [2020-10-28 13:44:35,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:44:35" (1/1) ... [2020-10-28 13:44:35,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:44:35,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:44:36,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:44:36,641 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:44:37,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:44:37,090 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:44:37,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37 WrapperNode [2020-10-28 13:44:37,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:44:37,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:44:37,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:44:37,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:44:37,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (1/1) ... [2020-10-28 13:44:37,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:44:37,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:44:37,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:44:37,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:44:37,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (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 13:44:37,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:44:37,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:44:37,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:44:37,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:44:37,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:44:37,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:44:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:44:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:44:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:44:37,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:44:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:44:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:44:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:44:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:44:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:44:37,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:44:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:44:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:44:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:44:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:44:37,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:44:46,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:44:46,175 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:44:46,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:44:46 BoogieIcfgContainer [2020-10-28 13:44:46,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:44:46,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:44:46,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:44:46,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:44:46,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:44:35" (1/3) ... [2020-10-28 13:44:46,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b13e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:44:46, skipping insertion in model container [2020-10-28 13:44:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:44:37" (2/3) ... [2020-10-28 13:44:46,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b13e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:44:46, skipping insertion in model container [2020-10-28 13:44:46,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:44:46" (3/3) ... [2020-10-28 13:44:46,186 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label56.c [2020-10-28 13:44:46,198 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:44:46,204 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:44:46,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:44:46,249 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:44:46,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:44:46,249 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:44:46,250 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:44:46,250 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:44:46,250 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:44:46,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:44:46,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:44:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:44:46,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 13:44:46,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:46,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:46,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:46,299 INFO L82 PathProgramCache]: Analyzing trace with hash -697365069, now seen corresponding path program 1 times [2020-10-28 13:44:46,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:46,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963914478] [2020-10-28 13:44:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 13:44:47,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-28 13:44:47,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:47,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:44:47,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:44:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:44:47,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:44:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:44:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:47,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:44:47,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:44:47,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:44:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:44:47,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:44:47,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:44:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:44:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:44:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:44:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:44:47,425 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 13:44:47,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963914478] [2020-10-28 13:44:47,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:44:47,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:44:47,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572928604] [2020-10-28 13:44:47,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:44:47,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:44:47,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:44:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:44:47,451 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:44:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:44:58,756 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:44:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:44:58,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-28 13:44:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:44:58,786 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:44:58,787 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:44:58,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:44:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:44:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:44:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:44:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:44:58,924 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 73 [2020-10-28 13:44:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:44:58,925 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:44:58,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:44:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:44:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 13:44:58,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:44:58,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:44:58,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:44:58,937 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:44:58,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:44:58,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2076935022, now seen corresponding path program 1 times [2020-10-28 13:44:58,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:44:58,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081337686] [2020-10-28 13:44:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:44:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:44:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:44:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:01,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:01,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 13:45:01,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:45:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-28 13:45:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:01,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:45:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:45:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:45:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:45:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:02,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:02,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:45:02,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:02,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:02,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:45:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:02,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:02,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:45:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:02,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:45:02,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:45:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:45:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:45:02,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081337686] [2020-10-28 13:45:02,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:45:02,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:45:02,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134258207] [2020-10-28 13:45:02,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:45:02,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:02,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:45:02,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:45:02,500 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:45:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:15,839 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-28 13:45:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:45:15,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-28 13:45:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:15,854 INFO L225 Difference]: With dead ends: 2964 [2020-10-28 13:45:15,854 INFO L226 Difference]: Without dead ends: 1967 [2020-10-28 13:45:15,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:45:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-28 13:45:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-28 13:45:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-28 13:45:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-28 13:45:15,951 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 144 [2020-10-28 13:45:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:15,953 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-28 13:45:15,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:45:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-28 13:45:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 13:45:15,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:15,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:45:15,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:45:15,966 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:15,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1113904761, now seen corresponding path program 1 times [2020-10-28 13:45:15,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:15,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193896908] [2020-10-28 13:45:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:21,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:21,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 13:45:21,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:45:21,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:45:21,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:21,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:45:21,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:45:21,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:21,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:45:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:21,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:21,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:21,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:45:21,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:45:21,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:21,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:21,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:45:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:45:21,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193896908] [2020-10-28 13:45:21,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:21,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:21,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035966731] [2020-10-28 13:45:21,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:21,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:21,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:21,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:21,367 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 5 states. [2020-10-28 13:45:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:36,355 INFO L93 Difference]: Finished difference Result 4732 states and 6292 transitions. [2020-10-28 13:45:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:45:36,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 13:45:36,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:36,379 INFO L225 Difference]: With dead ends: 4732 [2020-10-28 13:45:36,379 INFO L226 Difference]: Without dead ends: 2377 [2020-10-28 13:45:36,386 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 13:45:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-10-28 13:45:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2358. [2020-10-28 13:45:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-10-28 13:45:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2901 transitions. [2020-10-28 13:45:36,472 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2901 transitions. Word has length 147 [2020-10-28 13:45:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:36,472 INFO L481 AbstractCegarLoop]: Abstraction has 2358 states and 2901 transitions. [2020-10-28 13:45:36,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:45:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2901 transitions. [2020-10-28 13:45:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-28 13:45:36,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:36,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 13:45:36,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:45:36,482 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:36,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1725798167, now seen corresponding path program 1 times [2020-10-28 13:45:36,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:36,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237361129] [2020-10-28 13:45:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:37,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:37,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 13:45:37,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1302 [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:45:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:37,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:45:37,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:37,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:38,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:38,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:38,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:45:38,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:38,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:45:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:45:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:38,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:38,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:45:38,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:45:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:45:38,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237361129] [2020-10-28 13:45:38,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:38,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:45:38,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546934591] [2020-10-28 13:45:38,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:45:38,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:38,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:45:38,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:45:38,504 INFO L87 Difference]: Start difference. First operand 2358 states and 2901 transitions. Second operand 7 states. [2020-10-28 13:45:52,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:45:52,338 INFO L93 Difference]: Finished difference Result 6518 states and 8203 transitions. [2020-10-28 13:45:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:45:52,340 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-28 13:45:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:45:52,364 INFO L225 Difference]: With dead ends: 6518 [2020-10-28 13:45:52,365 INFO L226 Difference]: Without dead ends: 4166 [2020-10-28 13:45:52,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:45:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2020-10-28 13:45:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 3725. [2020-10-28 13:45:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2020-10-28 13:45:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4576 transitions. [2020-10-28 13:45:52,499 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4576 transitions. Word has length 233 [2020-10-28 13:45:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:45:52,500 INFO L481 AbstractCegarLoop]: Abstraction has 3725 states and 4576 transitions. [2020-10-28 13:45:52,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:45:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4576 transitions. [2020-10-28 13:45:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-28 13:45:52,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:45:52,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 13:45:52,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:45:52,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:45:52,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:45:52,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1793537541, now seen corresponding path program 1 times [2020-10-28 13:45:52,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:45:52,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071539933] [2020-10-28 13:45:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:45:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:57,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-28 13:45:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:45:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4750 [2020-10-28 13:45:57,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:57,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:45:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:45:57,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:45:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:45:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:57,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:57,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:45:57,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:45:57,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:57,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:57,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:45:57,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:45:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:57,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:57,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:45:57,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:45:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:57,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:45:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:57,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:45:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:45:57,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:45:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:45:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:45:57,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:45:57,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:45:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:45:57,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:45:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:45:57,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071539933] [2020-10-28 13:45:57,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:45:57,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:45:57,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7952968] [2020-10-28 13:45:57,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:45:57,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:45:57,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:45:57,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:45:57,812 INFO L87 Difference]: Start difference. First operand 3725 states and 4576 transitions. Second operand 5 states. [2020-10-28 13:46:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:12,188 INFO L93 Difference]: Finished difference Result 8801 states and 11053 transitions. [2020-10-28 13:46:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:46:12,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2020-10-28 13:46:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:12,221 INFO L225 Difference]: With dead ends: 8801 [2020-10-28 13:46:12,222 INFO L226 Difference]: Without dead ends: 4632 [2020-10-28 13:46:12,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:46:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2020-10-28 13:46:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4625. [2020-10-28 13:46:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4625 states. [2020-10-28 13:46:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 5729 transitions. [2020-10-28 13:46:12,386 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 5729 transitions. Word has length 235 [2020-10-28 13:46:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:12,388 INFO L481 AbstractCegarLoop]: Abstraction has 4625 states and 5729 transitions. [2020-10-28 13:46:12,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:46:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 5729 transitions. [2020-10-28 13:46:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-28 13:46:12,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:12,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:12,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:46:12,393 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:12,394 INFO L82 PathProgramCache]: Analyzing trace with hash 228949835, now seen corresponding path program 1 times [2020-10-28 13:46:12,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:12,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828144283] [2020-10-28 13:46:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:13,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:16,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:16,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-28 13:46:16,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3766 [2020-10-28 13:46:16,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:16,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:46:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:46:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 13:46:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:16,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:16,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:16,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:46:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:16,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:16,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:16,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:46:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:16,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:46:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:16,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:16,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:46:16,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-28 13:46:16,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:16,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:46:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 128 proven. 6 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 13:46:17,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828144283] [2020-10-28 13:46:17,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:17,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:46:17,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807904446] [2020-10-28 13:46:17,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:46:17,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:17,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:46:17,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:46:17,018 INFO L87 Difference]: Start difference. First operand 4625 states and 5729 transitions. Second operand 6 states. [2020-10-28 13:46:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:31,303 INFO L93 Difference]: Finished difference Result 9683 states and 12209 transitions. [2020-10-28 13:46:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:46:31,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 243 [2020-10-28 13:46:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:31,326 INFO L225 Difference]: With dead ends: 9683 [2020-10-28 13:46:31,327 INFO L226 Difference]: Without dead ends: 5064 [2020-10-28 13:46:31,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:46:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2020-10-28 13:46:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 5060. [2020-10-28 13:46:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5060 states. [2020-10-28 13:46:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6445 transitions. [2020-10-28 13:46:31,452 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6445 transitions. Word has length 243 [2020-10-28 13:46:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:31,453 INFO L481 AbstractCegarLoop]: Abstraction has 5060 states and 6445 transitions. [2020-10-28 13:46:31,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:46:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6445 transitions. [2020-10-28 13:46:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-28 13:46:31,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:31,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:46:31,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:46:31,458 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:31,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:31,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2084175803, now seen corresponding path program 1 times [2020-10-28 13:46:31,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:31,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351995862] [2020-10-28 13:46:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:31,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:32,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:32,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:46:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 13:46:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:32,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:46:32,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:32,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:33,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:46:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:33,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:46:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:33,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:33,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:33,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:46:33,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:46:33,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-28 13:46:33,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:33,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:33,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:33,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:46:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:46:33,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351995862] [2020-10-28 13:46:33,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:33,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:46:33,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659595383] [2020-10-28 13:46:33,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:46:33,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:46:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:46:33,669 INFO L87 Difference]: Start difference. First operand 5060 states and 6445 transitions. Second operand 6 states. [2020-10-28 13:46:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:46:47,289 INFO L93 Difference]: Finished difference Result 10118 states and 12893 transitions. [2020-10-28 13:46:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:46:47,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2020-10-28 13:46:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:46:47,313 INFO L225 Difference]: With dead ends: 10118 [2020-10-28 13:46:47,314 INFO L226 Difference]: Without dead ends: 5064 [2020-10-28 13:46:47,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:46:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2020-10-28 13:46:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 5060. [2020-10-28 13:46:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5060 states. [2020-10-28 13:46:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5060 states to 5060 states and 6288 transitions. [2020-10-28 13:46:47,445 INFO L78 Accepts]: Start accepts. Automaton has 5060 states and 6288 transitions. Word has length 246 [2020-10-28 13:46:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:46:47,446 INFO L481 AbstractCegarLoop]: Abstraction has 5060 states and 6288 transitions. [2020-10-28 13:46:47,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:46:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5060 states and 6288 transitions. [2020-10-28 13:46:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-28 13:46:47,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:46:47,454 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 13:46:47,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:46:47,454 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:46:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:46:47,455 INFO L82 PathProgramCache]: Analyzing trace with hash -361738246, now seen corresponding path program 1 times [2020-10-28 13:46:47,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:46:47,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520500733] [2020-10-28 13:46:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:46:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:52,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:46:52,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:46:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 13:46:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:52,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:46:52,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:46:52,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:46:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:52,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:52,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:46:52,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:46:52,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:52,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:52,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:46:52,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:46:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:46:52,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:46:52,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:52,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:46:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:46:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:46:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:46:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:46:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:53,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:46:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:46:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:46:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:53,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:46:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:46:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:46:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:46:53,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:46:53,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:46:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:46:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:46:53,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:46:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:46:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:46:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:46:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:46:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:46:53,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520500733] [2020-10-28 13:46:53,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:46:53,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:46:53,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828248164] [2020-10-28 13:46:53,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:46:53,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:46:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:46:53,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:46:53,384 INFO L87 Difference]: Start difference. First operand 5060 states and 6288 transitions. Second operand 7 states. [2020-10-28 13:47:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:07,401 INFO L93 Difference]: Finished difference Result 11658 states and 14787 transitions. [2020-10-28 13:47:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:47:07,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-28 13:47:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:07,431 INFO L225 Difference]: With dead ends: 11658 [2020-10-28 13:47:07,431 INFO L226 Difference]: Without dead ends: 6604 [2020-10-28 13:47:07,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:47:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2020-10-28 13:47:07,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 6544. [2020-10-28 13:47:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6544 states. [2020-10-28 13:47:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 8293 transitions. [2020-10-28 13:47:07,610 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 8293 transitions. Word has length 314 [2020-10-28 13:47:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:07,611 INFO L481 AbstractCegarLoop]: Abstraction has 6544 states and 8293 transitions. [2020-10-28 13:47:07,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:47:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 8293 transitions. [2020-10-28 13:47:07,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 13:47:07,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:07,619 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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 13:47:07,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:47:07,620 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:07,622 INFO L82 PathProgramCache]: Analyzing trace with hash -407604800, now seen corresponding path program 1 times [2020-10-28 13:47:07,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:07,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759291354] [2020-10-28 13:47:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:12,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:12,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:47:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:47:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:47:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:12,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:47:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:47:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:12,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:12,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:12,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:12,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:12,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:12,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:47:12,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:12,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:12,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:12,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:47:12,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:12,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:12,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:13,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:13,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:47:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:47:13,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:13,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:47:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:13,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:47:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:13,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:47:13,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:47:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 13:47:13,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:13,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:47:13,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:47:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 201 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:47:13,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759291354] [2020-10-28 13:47:13,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:13,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:47:13,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984552828] [2020-10-28 13:47:13,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:47:13,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:13,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:47:13,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:47:13,433 INFO L87 Difference]: Start difference. First operand 6544 states and 8293 transitions. Second operand 5 states. [2020-10-28 13:47:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:28,585 INFO L93 Difference]: Finished difference Result 17946 states and 23205 transitions. [2020-10-28 13:47:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:47:28,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-28 13:47:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:28,629 INFO L225 Difference]: With dead ends: 17946 [2020-10-28 13:47:28,629 INFO L226 Difference]: Without dead ends: 10072 [2020-10-28 13:47:28,650 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 13:47:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2020-10-28 13:47:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 10061. [2020-10-28 13:47:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10061 states. [2020-10-28 13:47:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10061 states to 10061 states and 12106 transitions. [2020-10-28 13:47:28,872 INFO L78 Accepts]: Start accepts. Automaton has 10061 states and 12106 transitions. Word has length 317 [2020-10-28 13:47:28,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:28,873 INFO L481 AbstractCegarLoop]: Abstraction has 10061 states and 12106 transitions. [2020-10-28 13:47:28,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:47:28,873 INFO L276 IsEmpty]: Start isEmpty. Operand 10061 states and 12106 transitions. [2020-10-28 13:47:28,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 13:47:28,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:28,880 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:47:28,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:47:28,880 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:28,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:28,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1824977442, now seen corresponding path program 1 times [2020-10-28 13:47:28,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:28,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205470884] [2020-10-28 13:47:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:29,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:33,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-28 13:47:34,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:47:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:47:34,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:34,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-28 13:47:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 13:47:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:34,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:34,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:34,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:47:34,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:34,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:34,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:47:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:34,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:34,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:34,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:34,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:47:34,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:47:34,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:34,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:47:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:34,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 13:47:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:34,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:34,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:47:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 296 proven. 66 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:47:34,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205470884] [2020-10-28 13:47:34,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:34,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:47:34,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533402636] [2020-10-28 13:47:34,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:47:34,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:34,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:47:34,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:47:34,673 INFO L87 Difference]: Start difference. First operand 10061 states and 12106 transitions. Second operand 7 states. [2020-10-28 13:47:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:47:52,370 INFO L93 Difference]: Finished difference Result 22457 states and 27310 transitions. [2020-10-28 13:47:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:47:52,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 331 [2020-10-28 13:47:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:47:52,406 INFO L225 Difference]: With dead ends: 22457 [2020-10-28 13:47:52,406 INFO L226 Difference]: Without dead ends: 11938 [2020-10-28 13:47:52,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:47:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11938 states. [2020-10-28 13:47:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11938 to 11902. [2020-10-28 13:47:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11902 states. [2020-10-28 13:47:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11902 states to 11902 states and 14440 transitions. [2020-10-28 13:47:52,673 INFO L78 Accepts]: Start accepts. Automaton has 11902 states and 14440 transitions. Word has length 331 [2020-10-28 13:47:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:47:52,674 INFO L481 AbstractCegarLoop]: Abstraction has 11902 states and 14440 transitions. [2020-10-28 13:47:52,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:47:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 11902 states and 14440 transitions. [2020-10-28 13:47:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 13:47:52,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:47:52,682 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:47:52,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:47:52,682 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:47:52,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:47:52,683 INFO L82 PathProgramCache]: Analyzing trace with hash 700729213, now seen corresponding path program 1 times [2020-10-28 13:47:52,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:47:52,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827554313] [2020-10-28 13:47:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:47:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:52,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:53,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4522 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 13:47:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:47:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:47:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:57,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:47:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:47:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:47:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:47:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:57,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:57,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:47:57,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:57,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:47:57,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:57,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:47:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:47:57,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:47:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:57,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:47:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:47:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:47:57,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:47:57,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:47:57,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:47:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:47:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:47:57,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:47:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:47:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:47:57,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:47:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:47:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 301 proven. 66 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:47:57,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827554313] [2020-10-28 13:47:57,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:47:57,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:47:57,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230447897] [2020-10-28 13:47:57,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:47:57,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:47:57,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:47:57,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:47:57,986 INFO L87 Difference]: Start difference. First operand 11902 states and 14440 transitions. Second operand 6 states. [2020-10-28 13:48:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:12,843 INFO L93 Difference]: Finished difference Result 29820 states and 37369 transitions. [2020-10-28 13:48:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:48:12,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 357 [2020-10-28 13:48:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:12,896 INFO L225 Difference]: With dead ends: 29820 [2020-10-28 13:48:12,896 INFO L226 Difference]: Without dead ends: 16499 [2020-10-28 13:48:12,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:48:12,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16499 states. [2020-10-28 13:48:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16499 to 16432. [2020-10-28 13:48:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16432 states. [2020-10-28 13:48:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16432 states to 16432 states and 20481 transitions. [2020-10-28 13:48:13,364 INFO L78 Accepts]: Start accepts. Automaton has 16432 states and 20481 transitions. Word has length 357 [2020-10-28 13:48:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:13,365 INFO L481 AbstractCegarLoop]: Abstraction has 16432 states and 20481 transitions. [2020-10-28 13:48:13,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:48:13,365 INFO L276 IsEmpty]: Start isEmpty. Operand 16432 states and 20481 transitions. [2020-10-28 13:48:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-28 13:48:13,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:13,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:48:13,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:48:13,382 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:13,383 INFO L82 PathProgramCache]: Analyzing trace with hash -537049227, now seen corresponding path program 1 times [2020-10-28 13:48:13,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:13,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776530823] [2020-10-28 13:48:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:18,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:18,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-28 13:48:18,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:48:18,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:48:18,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:18,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:48:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:48:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:18,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:18,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:48:18,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:18,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:48:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:48:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:18,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:18,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:48:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:48:18,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:48:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking...