/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=SHALLOWEST --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/Problem01_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:29:31,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:29:31,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:29:31,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:29:31,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:29:31,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:29:31,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:29:31,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:29:31,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:29:31,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:29:31,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:29:31,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:29:31,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:29:31,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:29:31,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:29:31,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:29:31,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:29:31,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:29:31,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:29:31,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:29:31,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:29:31,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:29:31,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:29:31,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:29:31,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:29:31,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:29:31,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:29:31,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:29:31,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:29:31,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:29:31,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:29:31,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:29:31,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:29:31,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:29:31,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:29:31,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:29:31,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:29:31,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:29:31,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:29:31,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:29:31,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:29:31,817 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 [2020-10-26 20:29:31,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:29:31,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:29:31,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:29:31,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:29:31,880 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:29:31,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:29:31,880 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:29:31,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:29:31,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:29:31,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:29:31,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:29:31,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:29:31,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:29:31,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:29:31,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:29:31,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:29:31,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:29:31,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:29:31,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:29:31,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:29:31,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:29:31,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:29:31,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:29:31,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:29:31,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:29:31,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:29:31,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:29:31,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:29:31,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:29:31,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:29:32,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:29:32,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:29:32,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:29:32,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:29:32,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:29:32,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label02.c [2020-10-26 20:29:32,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3212dfb3b/c948af731283401eb564ce84fcd45294/FLAG9814c73e5 [2020-10-26 20:29:33,350 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:29:33,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label02.c [2020-10-26 20:29:33,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3212dfb3b/c948af731283401eb564ce84fcd45294/FLAG9814c73e5 [2020-10-26 20:29:33,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3212dfb3b/c948af731283401eb564ce84fcd45294 [2020-10-26 20:29:33,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:29:33,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:29:33,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:29:33,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:29:33,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:29:33,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:29:33" (1/1) ... [2020-10-26 20:29:33,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216b903f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:33, skipping insertion in model container [2020-10-26 20:29:33,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:29:33" (1/1) ... [2020-10-26 20:29:33,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:29:33,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:29:34,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:29:34,051 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:29:34,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:29:34,200 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:29:34,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34 WrapperNode [2020-10-26 20:29:34,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:29:34,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:29:34,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:29:34,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:29:34,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (1/1) ... [2020-10-26 20:29:34,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:29:34,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:29:34,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:29:34,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:29:34,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (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 [2020-10-26 20:29:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:29:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:29:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:29:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:29:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:29:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:29:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:29:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:29:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:29:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:29:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:29:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:29:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:29:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:29:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:29:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:29:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:29:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:29:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:29:35,986 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:29:35,986 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:29:35,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:29:35 BoogieIcfgContainer [2020-10-26 20:29:35,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:29:35,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:29:35,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:29:35,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:29:35,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:29:33" (1/3) ... [2020-10-26 20:29:35,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126bda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:29:35, skipping insertion in model container [2020-10-26 20:29:35,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:29:34" (2/3) ... [2020-10-26 20:29:35,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126bda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:29:35, skipping insertion in model container [2020-10-26 20:29:35,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:29:35" (3/3) ... [2020-10-26 20:29:35,998 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label02.c [2020-10-26 20:29:36,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:29:36,017 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:29:36,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:29:36,062 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:29:36,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:29:36,062 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:29:36,063 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:29:36,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:29:36,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:29:36,063 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:29:36,063 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:29:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-26 20:29:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-26 20:29:36,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:29:36,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:29:36,102 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:29:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:29:36,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1162405541, now seen corresponding path program 1 times [2020-10-26 20:29:36,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:29:36,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618334982] [2020-10-26 20:29:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:29:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:38,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:38,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 20:29:38,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:29:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-10-26 20:29:38,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:29:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:29:38,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 20:29:38,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:29:39,202 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-26 20:29:39,405 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-26 20:29:39,598 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-26 20:29:39,762 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-10-26 20:29:40,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:29:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:29:40,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:29:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:29:40,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:29:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:29:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:29:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:40,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:29:40,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618334982] [2020-10-26 20:29:40,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:29:40,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-26 20:29:40,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965498687] [2020-10-26 20:29:40,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 20:29:40,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:29:40,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 20:29:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:29:40,392 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 12 states. [2020-10-26 20:29:40,609 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:29:40,815 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 20:29:41,015 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 20:29:41,270 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-26 20:29:41,758 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 141 [2020-10-26 20:29:42,307 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 138 [2020-10-26 20:29:43,078 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2020-10-26 20:29:43,898 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 132 [2020-10-26 20:29:44,504 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 127 [2020-10-26 20:29:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:29:45,967 INFO L93 Difference]: Finished difference Result 479 states and 799 transitions. [2020-10-26 20:29:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:29:45,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-26 20:29:45,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:29:45,995 INFO L225 Difference]: With dead ends: 479 [2020-10-26 20:29:45,995 INFO L226 Difference]: Without dead ends: 206 [2020-10-26 20:29:46,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-26 20:29:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-26 20:29:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-26 20:29:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-26 20:29:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2020-10-26 20:29:46,072 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 97 [2020-10-26 20:29:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:29:46,073 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2020-10-26 20:29:46,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 20:29:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2020-10-26 20:29:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-26 20:29:46,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:29:46,079 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 20:29:46,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:29:46,079 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:29:46,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:29:46,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1964743165, now seen corresponding path program 1 times [2020-10-26 20:29:46,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:29:46,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057507231] [2020-10-26 20:29:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:29:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:46,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:46,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 20:29:48,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:29:48,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2406 [2020-10-26 20:29:48,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:29:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:29:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 20:29:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:29:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:29:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:48,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:48,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:29:48,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:29:48,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 20:29:48,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:29:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:29:48,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:29:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:29:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:48,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:29:48,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:29:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:29:48,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:29:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:29:48,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:29:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:29:48,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057507231] [2020-10-26 20:29:48,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:29:48,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:29:48,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434613330] [2020-10-26 20:29:48,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:29:48,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:29:48,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:29:48,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:29:48,864 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 6 states. [2020-10-26 20:29:49,029 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-26 20:29:50,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:29:50,282 INFO L93 Difference]: Finished difference Result 485 states and 696 transitions. [2020-10-26 20:29:50,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:29:50,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-26 20:29:50,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:29:50,294 INFO L225 Difference]: With dead ends: 485 [2020-10-26 20:29:50,295 INFO L226 Difference]: Without dead ends: 345 [2020-10-26 20:29:50,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:29:50,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-26 20:29:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2020-10-26 20:29:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-26 20:29:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2020-10-26 20:29:50,341 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 105 [2020-10-26 20:29:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:29:50,343 INFO L481 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2020-10-26 20:29:50,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:29:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2020-10-26 20:29:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-26 20:29:50,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:29:50,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-26 20:29:50,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:29:50,355 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:29:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:29:50,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1631504568, now seen corresponding path program 1 times [2020-10-26 20:29:50,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:29:50,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998764391] [2020-10-26 20:29:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:29:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:50,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:54,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:55,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:55,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 20:29:55,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:29:55,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 20:29:55,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:55,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:29:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:29:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:29:55,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:29:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:29:55,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:29:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:29:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:29:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:29:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:29:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:29:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:55,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:29:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:29:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:29:55,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:29:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:29:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:29:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:29:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:29:55,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:29:55,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:29:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:29:55,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:29:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:29:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:29:55,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:29:55,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:29:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:29:55,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998764391] [2020-10-26 20:29:55,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:29:55,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:29:55,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092701918] [2020-10-26 20:29:55,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:29:55,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:29:55,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:29:55,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:29:55,649 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand 8 states. [2020-10-26 20:29:57,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:29:57,341 INFO L93 Difference]: Finished difference Result 922 states and 1314 transitions. [2020-10-26 20:29:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:29:57,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 114 [2020-10-26 20:29:57,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:29:57,346 INFO L225 Difference]: With dead ends: 922 [2020-10-26 20:29:57,347 INFO L226 Difference]: Without dead ends: 645 [2020-10-26 20:29:57,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:29:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-10-26 20:29:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 623. [2020-10-26 20:29:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2020-10-26 20:29:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 836 transitions. [2020-10-26 20:29:57,420 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 836 transitions. Word has length 114 [2020-10-26 20:29:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:29:57,421 INFO L481 AbstractCegarLoop]: Abstraction has 623 states and 836 transitions. [2020-10-26 20:29:57,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:29:57,421 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 836 transitions. [2020-10-26 20:29:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-26 20:29:57,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:29:57,432 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 20:29:57,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:29:57,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:29:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:29:57,433 INFO L82 PathProgramCache]: Analyzing trace with hash 872293407, now seen corresponding path program 1 times [2020-10-26 20:29:57,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:29:57,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172174376] [2020-10-26 20:29:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:29:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:29:57,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:29:58,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:00,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:02,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:02,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-26 20:30:02,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 20:30:02,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:30:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:30:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 20:30:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:02,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:02,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:02,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:30:02,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:30:02,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:30:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:30:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:30:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:30:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:30:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:02,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:02,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:02,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:30:02,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:30:02,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:30:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:30:02,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172174376] [2020-10-26 20:30:02,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:02,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:30:02,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250532043] [2020-10-26 20:30:02,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:02,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:02,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:02,786 INFO L87 Difference]: Start difference. First operand 623 states and 836 transitions. Second operand 7 states. [2020-10-26 20:30:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:04,738 INFO L93 Difference]: Finished difference Result 1794 states and 2528 transitions. [2020-10-26 20:30:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:30:04,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-26 20:30:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:04,750 INFO L225 Difference]: With dead ends: 1794 [2020-10-26 20:30:04,750 INFO L226 Difference]: Without dead ends: 1237 [2020-10-26 20:30:04,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:30:04,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-10-26 20:30:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1211. [2020-10-26 20:30:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-10-26 20:30:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1595 transitions. [2020-10-26 20:30:04,829 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1595 transitions. Word has length 121 [2020-10-26 20:30:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:04,829 INFO L481 AbstractCegarLoop]: Abstraction has 1211 states and 1595 transitions. [2020-10-26 20:30:04,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:30:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1595 transitions. [2020-10-26 20:30:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 20:30:04,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:04,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:30:04,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:30:04,836 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:04,837 INFO L82 PathProgramCache]: Analyzing trace with hash 643297291, now seen corresponding path program 1 times [2020-10-26 20:30:04,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:04,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237631679] [2020-10-26 20:30:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:09,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 20:30:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 20:30:09,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:30:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:30:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:30:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:10,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:10,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:10,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:10,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:30:10,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:30:10,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:10,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:30:10,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:30:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:30:10,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:10,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:30:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:30:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:10,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:10,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:30:10,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 20:30:10,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:30:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:30:10,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237631679] [2020-10-26 20:30:10,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:10,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:30:10,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28645601] [2020-10-26 20:30:10,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:30:10,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:10,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:30:10,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:30:10,305 INFO L87 Difference]: Start difference. First operand 1211 states and 1595 transitions. Second operand 8 states. [2020-10-26 20:30:11,491 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:30:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:12,230 INFO L93 Difference]: Finished difference Result 2396 states and 3209 transitions. [2020-10-26 20:30:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:30:12,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-10-26 20:30:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:12,239 INFO L225 Difference]: With dead ends: 2396 [2020-10-26 20:30:12,239 INFO L226 Difference]: Without dead ends: 1251 [2020-10-26 20:30:12,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:30:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-10-26 20:30:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1225. [2020-10-26 20:30:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-26 20:30:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1602 transitions. [2020-10-26 20:30:12,297 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1602 transitions. Word has length 127 [2020-10-26 20:30:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:12,298 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 1602 transitions. [2020-10-26 20:30:12,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:30:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1602 transitions. [2020-10-26 20:30:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-26 20:30:12,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:12,303 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:30:12,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:30:12,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:12,304 INFO L82 PathProgramCache]: Analyzing trace with hash -896750147, now seen corresponding path program 1 times [2020-10-26 20:30:12,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:12,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34052060] [2020-10-26 20:30:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:17,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 20:30:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 20:30:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-26 20:30:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:30:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:17,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:17,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:30:17,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:17,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:17,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:30:17,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:17,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:30:17,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:30:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:17,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:30:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:17,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:17,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:30:17,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:30:17,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:30:17,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:30:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:17,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:17,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:30:17,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:30:17,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-26 20:30:17,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:17,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:30:17,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34052060] [2020-10-26 20:30:17,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:17,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:30:17,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584525707] [2020-10-26 20:30:17,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:17,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:17,704 INFO L87 Difference]: Start difference. First operand 1225 states and 1602 transitions. Second operand 7 states. [2020-10-26 20:30:19,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:19,867 INFO L93 Difference]: Finished difference Result 2406 states and 3228 transitions. [2020-10-26 20:30:19,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:30:19,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-10-26 20:30:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:19,877 INFO L225 Difference]: With dead ends: 2406 [2020-10-26 20:30:19,878 INFO L226 Difference]: Without dead ends: 1247 [2020-10-26 20:30:19,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:30:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2020-10-26 20:30:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1223. [2020-10-26 20:30:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1223 states. [2020-10-26 20:30:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1505 transitions. [2020-10-26 20:30:19,945 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1505 transitions. Word has length 129 [2020-10-26 20:30:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:19,945 INFO L481 AbstractCegarLoop]: Abstraction has 1223 states and 1505 transitions. [2020-10-26 20:30:19,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:30:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1505 transitions. [2020-10-26 20:30:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-26 20:30:19,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:19,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:30:19,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:30:19,952 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:19,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:19,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1099224584, now seen corresponding path program 1 times [2020-10-26 20:30:19,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:19,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391798763] [2020-10-26 20:30:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:22,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:22,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-26 20:30:22,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:22,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2357 [2020-10-26 20:30:22,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:22,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:30:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:30:22,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 20:30:22,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:22,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:22,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:30:22,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:30:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:22,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:22,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:30:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:30:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 20:30:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:30:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:30:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:22,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:22,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-26 20:30:22,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:30:22,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391798763] [2020-10-26 20:30:22,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:22,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:30:22,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463361544] [2020-10-26 20:30:22,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:22,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:22,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:22,657 INFO L87 Difference]: Start difference. First operand 1223 states and 1505 transitions. Second operand 7 states. [2020-10-26 20:30:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:24,114 INFO L93 Difference]: Finished difference Result 2662 states and 3289 transitions. [2020-10-26 20:30:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:30:24,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-26 20:30:24,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:24,123 INFO L225 Difference]: With dead ends: 2662 [2020-10-26 20:30:24,123 INFO L226 Difference]: Without dead ends: 1505 [2020-10-26 20:30:24,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:30:24,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2020-10-26 20:30:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1497. [2020-10-26 20:30:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2020-10-26 20:30:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1772 transitions. [2020-10-26 20:30:24,182 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1772 transitions. Word has length 128 [2020-10-26 20:30:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:24,183 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 1772 transitions. [2020-10-26 20:30:24,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:30:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1772 transitions. [2020-10-26 20:30:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 20:30:24,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:24,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:30:24,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:30:24,188 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:24,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1864732126, now seen corresponding path program 1 times [2020-10-26 20:30:24,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:24,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553468698] [2020-10-26 20:30:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:24,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:26,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-26 20:30:26,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:30:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2713 [2020-10-26 20:30:26,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:30:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:30:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 20:30:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:30:27,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:30:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:30:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:30:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:30:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:30:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:27,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:30:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:27,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:27,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:30:27,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-26 20:30:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:27,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:27,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:27,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:30:27,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:30:27,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:30:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:30:27,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553468698] [2020-10-26 20:30:27,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:27,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:30:27,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732494197] [2020-10-26 20:30:27,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:30:27,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:27,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:30:27,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:30:27,345 INFO L87 Difference]: Start difference. First operand 1497 states and 1772 transitions. Second operand 8 states. [2020-10-26 20:30:28,591 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:30:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:29,146 INFO L93 Difference]: Finished difference Result 2956 states and 3521 transitions. [2020-10-26 20:30:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:30:29,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-26 20:30:29,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:29,154 INFO L225 Difference]: With dead ends: 2956 [2020-10-26 20:30:29,154 INFO L226 Difference]: Without dead ends: 1374 [2020-10-26 20:30:29,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:30:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-10-26 20:30:29,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1352. [2020-10-26 20:30:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-10-26 20:30:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1541 transitions. [2020-10-26 20:30:29,204 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1541 transitions. Word has length 140 [2020-10-26 20:30:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:29,204 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1541 transitions. [2020-10-26 20:30:29,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:30:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1541 transitions. [2020-10-26 20:30:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-26 20:30:29,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:29,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-26 20:30:29,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:30:29,209 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash -808707205, now seen corresponding path program 1 times [2020-10-26 20:30:29,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:29,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328046472] [2020-10-26 20:30:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:29,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:30,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:31,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:31,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-26 20:30:31,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:30:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-10-26 20:30:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:30:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:30:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:30:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:32,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:32,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:32,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:32,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:32,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:32,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:30:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:32,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:30:32,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:30:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:32,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:30:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:32,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:32,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:30:32,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:30:32,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:30:32,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:30:32,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:32,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:30:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:32,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:32,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:30:32,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:30:32,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:32,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:30:32,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 20:30:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:32,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:32,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-26 20:30:32,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:30:32,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:30:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:30:32,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328046472] [2020-10-26 20:30:32,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:32,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:30:32,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466410320] [2020-10-26 20:30:32,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:30:32,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:30:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:30:32,374 INFO L87 Difference]: Start difference. First operand 1352 states and 1541 transitions. Second operand 9 states. [2020-10-26 20:30:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:34,164 INFO L93 Difference]: Finished difference Result 3218 states and 3744 transitions. [2020-10-26 20:30:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:30:34,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 153 [2020-10-26 20:30:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:34,174 INFO L225 Difference]: With dead ends: 3218 [2020-10-26 20:30:34,175 INFO L226 Difference]: Without dead ends: 1793 [2020-10-26 20:30:34,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:30:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2020-10-26 20:30:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1775. [2020-10-26 20:30:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1775 states. [2020-10-26 20:30:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2033 transitions. [2020-10-26 20:30:34,239 INFO L78 Accepts]: Start accepts. Automaton has 1775 states and 2033 transitions. Word has length 153 [2020-10-26 20:30:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:34,239 INFO L481 AbstractCegarLoop]: Abstraction has 1775 states and 2033 transitions. [2020-10-26 20:30:34,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:30:34,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1775 states and 2033 transitions. [2020-10-26 20:30:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-26 20:30:34,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:34,245 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:30:34,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:30:34,246 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:34,247 INFO L82 PathProgramCache]: Analyzing trace with hash -444990110, now seen corresponding path program 1 times [2020-10-26 20:30:34,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:34,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595624181] [2020-10-26 20:30:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:34,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1382 [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:35,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:30:35,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:30:35,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:35,795 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 20:30:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:35,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:35,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:35,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:30:35,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:35,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:35,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:35,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:30:35,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:30:35,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:30:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:30:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:35,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:35,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:30:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:35,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-26 20:30:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:35,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:35,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:35,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:35,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:30:35,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595624181] [2020-10-26 20:30:35,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:35,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:30:35,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416588271] [2020-10-26 20:30:35,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:35,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:35,983 INFO L87 Difference]: Start difference. First operand 1775 states and 2033 transitions. Second operand 7 states. [2020-10-26 20:30:37,222 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 20:30:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:37,565 INFO L93 Difference]: Finished difference Result 3770 states and 4339 transitions. [2020-10-26 20:30:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:30:37,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-10-26 20:30:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:37,578 INFO L225 Difference]: With dead ends: 3770 [2020-10-26 20:30:37,578 INFO L226 Difference]: Without dead ends: 2061 [2020-10-26 20:30:37,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:30:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-10-26 20:30:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 2053. [2020-10-26 20:30:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2053 states. [2020-10-26 20:30:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2332 transitions. [2020-10-26 20:30:37,642 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2332 transitions. Word has length 158 [2020-10-26 20:30:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:37,643 INFO L481 AbstractCegarLoop]: Abstraction has 2053 states and 2332 transitions. [2020-10-26 20:30:37,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:30:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2332 transitions. [2020-10-26 20:30:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-26 20:30:37,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:37,648 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, 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] [2020-10-26 20:30:37,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:30:37,649 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1026743952, now seen corresponding path program 1 times [2020-10-26 20:30:37,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:37,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145055239] [2020-10-26 20:30:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-26 20:30:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:39,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1687 [2020-10-26 20:30:39,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:30:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:30:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 20:30:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:30:39,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:30:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:39,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:30:39,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 20:30:39,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:39,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:30:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:39,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:30:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:39,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:39,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:30:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-26 20:30:39,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145055239] [2020-10-26 20:30:39,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:39,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:30:39,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705961536] [2020-10-26 20:30:39,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:39,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:39,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:39,803 INFO L87 Difference]: Start difference. First operand 2053 states and 2332 transitions. Second operand 7 states. [2020-10-26 20:30:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:41,402 INFO L93 Difference]: Finished difference Result 4330 states and 4945 transitions. [2020-10-26 20:30:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:30:41,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-26 20:30:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:41,413 INFO L225 Difference]: With dead ends: 4330 [2020-10-26 20:30:41,413 INFO L226 Difference]: Without dead ends: 2343 [2020-10-26 20:30:41,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:30:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-10-26 20:30:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2333. [2020-10-26 20:30:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-10-26 20:30:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 2640 transitions. [2020-10-26 20:30:41,506 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 2640 transitions. Word has length 172 [2020-10-26 20:30:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:41,507 INFO L481 AbstractCegarLoop]: Abstraction has 2333 states and 2640 transitions. [2020-10-26 20:30:41,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:30:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 2640 transitions. [2020-10-26 20:30:41,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-26 20:30:41,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:41,513 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:30:41,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:30:41,513 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:41,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1705579694, now seen corresponding path program 1 times [2020-10-26 20:30:41,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:41,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495584909] [2020-10-26 20:30:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:41,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:42,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 20:30:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:43,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:43,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:43,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:43,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:30:43,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:43,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:43,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:43,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:30:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:30:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:43,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:43,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:30:43,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 20:30:43,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:30:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 20:30:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:43,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:43,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 83 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-26 20:30:43,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495584909] [2020-10-26 20:30:43,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:43,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:30:43,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123098843] [2020-10-26 20:30:43,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:43,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:43,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:43,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:43,232 INFO L87 Difference]: Start difference. First operand 2333 states and 2640 transitions. Second operand 7 states. [2020-10-26 20:30:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:45,338 INFO L93 Difference]: Finished difference Result 5869 states and 6619 transitions. [2020-10-26 20:30:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:30:45,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-26 20:30:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:45,354 INFO L225 Difference]: With dead ends: 5869 [2020-10-26 20:30:45,354 INFO L226 Difference]: Without dead ends: 3602 [2020-10-26 20:30:45,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:30:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2020-10-26 20:30:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 2337. [2020-10-26 20:30:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-10-26 20:30:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 2584 transitions. [2020-10-26 20:30:45,437 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 2584 transitions. Word has length 180 [2020-10-26 20:30:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:45,437 INFO L481 AbstractCegarLoop]: Abstraction has 2337 states and 2584 transitions. [2020-10-26 20:30:45,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:30:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 2584 transitions. [2020-10-26 20:30:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-26 20:30:45,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:45,444 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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] [2020-10-26 20:30:45,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:30:45,445 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash -527488628, now seen corresponding path program 1 times [2020-10-26 20:30:45,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:45,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905737889] [2020-10-26 20:30:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:49,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4125 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:30:49,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:49,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:49,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:49,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:49,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 20:30:49,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:49,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:49,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-26 20:30:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:30:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:30:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:30:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:49,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:30:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-26 20:30:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:50,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 129 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 20:30:50,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905737889] [2020-10-26 20:30:50,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:50,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:30:50,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576512724] [2020-10-26 20:30:50,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:30:50,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:50,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:30:50,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:30:50,176 INFO L87 Difference]: Start difference. First operand 2337 states and 2584 transitions. Second operand 9 states. [2020-10-26 20:30:50,404 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:30:52,631 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 20:30:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:52,698 INFO L93 Difference]: Finished difference Result 5299 states and 5906 transitions. [2020-10-26 20:30:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 20:30:52,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 208 [2020-10-26 20:30:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:52,714 INFO L225 Difference]: With dead ends: 5299 [2020-10-26 20:30:52,714 INFO L226 Difference]: Without dead ends: 2891 [2020-10-26 20:30:52,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-26 20:30:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-10-26 20:30:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2750. [2020-10-26 20:30:52,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-10-26 20:30:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3021 transitions. [2020-10-26 20:30:52,802 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3021 transitions. Word has length 208 [2020-10-26 20:30:52,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:52,803 INFO L481 AbstractCegarLoop]: Abstraction has 2750 states and 3021 transitions. [2020-10-26 20:30:52,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 20:30:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3021 transitions. [2020-10-26 20:30:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-26 20:30:52,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:52,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-26 20:30:52,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:30:52,814 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 364743284, now seen corresponding path program 1 times [2020-10-26 20:30:52,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:52,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402215324] [2020-10-26 20:30:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:30:54,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:54,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:54,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:30:54,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:54,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:54,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:30:54,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:54,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:30:54,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:54,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:54,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:30:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:55,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:55,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 20:30:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:30:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:55,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:55,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:30:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 20:30:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:55,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:55,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:55,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:30:55,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:30:55,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-26 20:30:55,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:55,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 160 proven. 18 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 20:30:55,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402215324] [2020-10-26 20:30:55,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:55,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:30:55,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102730095] [2020-10-26 20:30:55,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:30:55,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:55,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:30:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:30:55,235 INFO L87 Difference]: Start difference. First operand 2750 states and 3021 transitions. Second operand 8 states. [2020-10-26 20:30:55,967 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:30:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:30:57,771 INFO L93 Difference]: Finished difference Result 5853 states and 6464 transitions. [2020-10-26 20:30:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:30:57,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-26 20:30:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:30:57,784 INFO L225 Difference]: With dead ends: 5853 [2020-10-26 20:30:57,784 INFO L226 Difference]: Without dead ends: 3171 [2020-10-26 20:30:57,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 20:30:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-10-26 20:30:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3159. [2020-10-26 20:30:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3159 states. [2020-10-26 20:30:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 3455 transitions. [2020-10-26 20:30:57,870 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 3455 transitions. Word has length 224 [2020-10-26 20:30:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:30:57,870 INFO L481 AbstractCegarLoop]: Abstraction has 3159 states and 3455 transitions. [2020-10-26 20:30:57,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:30:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 3455 transitions. [2020-10-26 20:30:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 20:30:57,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:30:57,879 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-26 20:30:57,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:30:57,879 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:30:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:30:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash 264025352, now seen corresponding path program 1 times [2020-10-26 20:30:57,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:30:57,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821236583] [2020-10-26 20:30:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:30:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:57,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:58,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 20:30:58,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 20:30:58,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:30:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:30:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:30:58,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:30:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-26 20:30:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:59,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:30:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:59,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-26 20:30:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:30:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:30:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 20:30:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:59,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-26 20:30:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:30:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:30:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:30:59,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:30:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-26 20:30:59,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821236583] [2020-10-26 20:30:59,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:30:59,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:30:59,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374554191] [2020-10-26 20:30:59,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:30:59,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:30:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:30:59,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:30:59,267 INFO L87 Difference]: Start difference. First operand 3159 states and 3455 transitions. Second operand 7 states. [2020-10-26 20:30:59,628 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 20:30:59,958 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:31:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:31:01,112 INFO L93 Difference]: Finished difference Result 6663 states and 7315 transitions. [2020-10-26 20:31:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:31:01,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-26 20:31:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:31:01,132 INFO L225 Difference]: With dead ends: 6663 [2020-10-26 20:31:01,132 INFO L226 Difference]: Without dead ends: 3572 [2020-10-26 20:31:01,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:31:01,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2020-10-26 20:31:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 3429. [2020-10-26 20:31:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3429 states. [2020-10-26 20:31:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 3750 transitions. [2020-10-26 20:31:01,232 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 3750 transitions. Word has length 230 [2020-10-26 20:31:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:31:01,232 INFO L481 AbstractCegarLoop]: Abstraction has 3429 states and 3750 transitions. [2020-10-26 20:31:01,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:31:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 3750 transitions. [2020-10-26 20:31:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-26 20:31:01,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:31:01,242 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:31:01,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:31:01,242 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:31:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:31:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash 518706095, now seen corresponding path program 1 times [2020-10-26 20:31:01,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:31:01,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472106582] [2020-10-26 20:31:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:31:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:02,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 20:31:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:31:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:02,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:02,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:31:02,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:31:02,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:02,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:31:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:02,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:02,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-26 20:31:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:02,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:02,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:02,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:31:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:02,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:31:02,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-26 20:31:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 20:31:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:02,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:02,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:31:02,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 20:31:02,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472106582] [2020-10-26 20:31:02,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:31:02,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:31:02,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426658252] [2020-10-26 20:31:02,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:31:02,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:31:02,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:31:02,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:31:02,547 INFO L87 Difference]: Start difference. First operand 3429 states and 3750 transitions. Second operand 7 states. [2020-10-26 20:31:03,011 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 20:31:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:31:04,186 INFO L93 Difference]: Finished difference Result 7479 states and 8215 transitions. [2020-10-26 20:31:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:31:04,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-26 20:31:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:31:04,200 INFO L225 Difference]: With dead ends: 7479 [2020-10-26 20:31:04,200 INFO L226 Difference]: Without dead ends: 3834 [2020-10-26 20:31:04,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:31:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2020-10-26 20:31:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3560. [2020-10-26 20:31:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3560 states. [2020-10-26 20:31:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 3855 transitions. [2020-10-26 20:31:04,290 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 3855 transitions. Word has length 247 [2020-10-26 20:31:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:31:04,291 INFO L481 AbstractCegarLoop]: Abstraction has 3560 states and 3855 transitions. [2020-10-26 20:31:04,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:31:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 3855 transitions. [2020-10-26 20:31:04,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-26 20:31:04,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:31:04,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:31:04,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:31:04,300 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:31:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:31:04,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1101837744, now seen corresponding path program 1 times [2020-10-26 20:31:04,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:31:04,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371340707] [2020-10-26 20:31:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:31:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:04,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:04,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:04,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-26 20:31:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:31:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-26 20:31:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:31:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 20:31:04,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 20:31:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:31:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:05,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:05,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:05,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:31:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:05,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:31:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:05,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:05,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:31:05,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:31:05,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:31:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:05,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:05,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:31:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-26 20:31:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:31:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:31:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-26 20:31:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 154 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-26 20:31:05,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371340707] [2020-10-26 20:31:05,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:31:05,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 20:31:05,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511778317] [2020-10-26 20:31:05,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 20:31:05,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:31:05,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 20:31:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:31:05,343 INFO L87 Difference]: Start difference. First operand 3560 states and 3855 transitions. Second operand 5 states. [2020-10-26 20:31:06,097 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-26 20:31:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:31:06,439 INFO L93 Difference]: Finished difference Result 7002 states and 7588 transitions. [2020-10-26 20:31:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:31:06,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-26 20:31:06,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:31:06,451 INFO L225 Difference]: With dead ends: 7002 [2020-10-26 20:31:06,451 INFO L226 Difference]: Without dead ends: 3425 [2020-10-26 20:31:06,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:31:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2020-10-26 20:31:06,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 3421. [2020-10-26 20:31:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3421 states. [2020-10-26 20:31:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 3700 transitions. [2020-10-26 20:31:06,535 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 3700 transitions. Word has length 258 [2020-10-26 20:31:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:31:06,536 INFO L481 AbstractCegarLoop]: Abstraction has 3421 states and 3700 transitions. [2020-10-26 20:31:06,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 20:31:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 3700 transitions. [2020-10-26 20:31:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-26 20:31:06,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:31:06,548 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 20:31:06,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 20:31:06,548 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:31:06,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:31:06,549 INFO L82 PathProgramCache]: Analyzing trace with hash -138890314, now seen corresponding path program 1 times [2020-10-26 20:31:06,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:31:06,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433927102] [2020-10-26 20:31:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:31:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:08,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:08,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-26 20:31:08,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:31:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2315 [2020-10-26 20:31:08,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:31:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-26 20:31:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 20:31:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:31:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:09,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:31:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-26 20:31:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-26 20:31:09,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:09,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:31:09,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:31:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:09,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:31:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-26 20:31:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:09,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:31:09,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 20:31:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:31:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:31:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-26 20:31:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:31:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 214 proven. 29 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-26 20:31:09,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433927102] [2020-10-26 20:31:09,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:31:09,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:31:09,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394216249] [2020-10-26 20:31:09,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:31:09,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:31:09,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:31:09,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:31:09,349 INFO L87 Difference]: Start difference. First operand 3421 states and 3700 transitions. Second operand 6 states. [2020-10-26 20:31:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:31:10,670 INFO L93 Difference]: Finished difference Result 3485 states and 3866 transitions. [2020-10-26 20:31:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 20:31:10,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2020-10-26 20:31:10,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:31:10,674 INFO L225 Difference]: With dead ends: 3485 [2020-10-26 20:31:10,674 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 20:31:10,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:31:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 20:31:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 20:31:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 20:31:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 20:31:10,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 268 [2020-10-26 20:31:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:31:10,687 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 20:31:10,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:31:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 20:31:10,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 20:31:10,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 20:31:10,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-26 20:31:12,343 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 247 [2020-10-26 20:31:12,764 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 226 [2020-10-26 20:31:13,080 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 40 [2020-10-26 20:31:15,156 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 260 DAG size of output: 93 [2020-10-26 20:31:16,330 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 215 DAG size of output: 64 [2020-10-26 20:31:17,572 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 194 DAG size of output: 64 [2020-10-26 20:31:18,067 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 66 [2020-10-26 20:31:18,072 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-26 20:31:18,073 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-26 20:31:18,073 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-26 20:31:18,073 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-26 20:31:18,073 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,074 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-26 20:31:18,075 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-26 20:31:18,076 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,077 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-26 20:31:18,078 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-26 20:31:18,079 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,080 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-26 20:31:18,081 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-26 20:31:18,082 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L274 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L274 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-26 20:31:18,083 INFO L270 CegarLoopResult]: At program point L448(line 448) the Hoare annotation is: (let ((.cse8 (not (<= 15 |old(~a8~0)|))) (.cse2 (not (= 5 |old(~a16~0)|))) (.cse4 (not (<= |old(~a21~0)| 0))) (.cse9 (not (= |old(~a17~0)| 1))) (.cse5 (not (= |old(~a20~0)| 1))) (.cse6 (not (= |old(~a7~0)| 0))) (.cse0 (not (= |old(~a7~0)| 1))) (.cse1 (not (= 0 |old(~a20~0)|))) (.cse3 (not (= |old(~a21~0)| 1))) (.cse7 (not (= 4 |old(~a16~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse5) (or .cse5 .cse3 .cse6 .cse7) (or (not (<= |old(~a16~0)| 5)) .cse8 .cse0 .cse3) (or .cse8 .cse5 .cse3 .cse6) (or .cse9 .cse0 .cse5 .cse3) (or .cse1 .cse3 .cse6) (or (not (= 14 |old(~a8~0)|)) .cse0 .cse5 .cse2 .cse3 (not (= ~a12~0 8)) (not (= 0 |old(~a17~0)|))) (or .cse9 .cse4 .cse0 .cse1) (or .cse9 .cse5 .cse3 .cse6) (or (not (<= 6 |old(~a16~0)|)) (not (<= 1 |old(~a20~0)|)) .cse3 .cse6 (not (<= |old(~a20~0)| 1))) (or (not (<= |old(~a20~0)| |old(~a17~0)|)) .cse0 .cse1 (not (<= |old(~a17~0)| |old(~a20~0)|)) .cse3 .cse7))) [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L448-1(line 448) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-26 20:31:18,084 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-26 20:31:18,085 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-26 20:31:18,086 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-26 20:31:18,087 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-26 20:31:18,087 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,087 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,087 INFO L270 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse19 (= ~a7~0 0)) (.cse9 (= ~a7~0 |old(~a7~0)|)) (.cse18 (= ~a17~0 |old(~a17~0)|)) (.cse10 (= ~a21~0 1)) (.cse11 (= ~a20~0 |old(~a20~0)|)) (.cse20 (= ~a16~0 |old(~a16~0)|)) (.cse12 (= ~a8~0 |old(~a8~0)|))) (let ((.cse0 (not (<= 15 |old(~a8~0)|))) (.cse2 (and .cse9 .cse18 .cse10 .cse11 .cse20 .cse12)) (.cse15 (not (<= |old(~a21~0)| 0))) (.cse5 (not (= 0 |old(~a20~0)|))) (.cse16 (and .cse9 .cse18 (= ~a21~0 |old(~a21~0)|) .cse11 .cse20 .cse12)) (.cse7 (not (= |old(~a17~0)| 1))) (.cse1 (not (= |old(~a7~0)| 1))) (.cse17 (not (= 5 |old(~a16~0)|))) (.cse8 (not (= |old(~a20~0)| 1))) (.cse13 (= ~a16~0 4)) (.cse14 (not (= 4 |old(~a16~0)|))) (.cse4 (and .cse18 .cse10 .cse11 .cse20 .cse12 .cse19)) (.cse3 (not (= |old(~a21~0)| 1))) (.cse6 (not (= |old(~a7~0)| 0)))) (and (or (not (<= |old(~a16~0)| 5)) .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse3 .cse6) (or .cse7 .cse1 .cse8 .cse2 .cse3) (or (not (<= |old(~a20~0)| |old(~a17~0)|)) (and .cse9 .cse10 .cse11 (<= ~a20~0 ~a17~0) (<= ~a17~0 ~a20~0) .cse12 .cse13) .cse1 .cse5 (not (<= |old(~a17~0)| |old(~a20~0)|)) .cse3 .cse14) (or .cse15 .cse1 .cse8 .cse16) (or .cse4 .cse0 .cse8 .cse3 .cse6) (or .cse1 .cse5 .cse17 .cse2 .cse3) (or .cse7 .cse15 .cse1 .cse5 .cse16) (or .cse7 .cse4 .cse8 .cse3 .cse6) (or (not (= 14 |old(~a8~0)|)) .cse1 .cse8 (and .cse9 .cse18 .cse10 .cse11 (= 14 ~a8~0) (= 5 ~a16~0)) .cse17 .cse3 (not (= ~a12~0 8)) (not (= 0 |old(~a17~0)|))) (or .cse8 .cse3 (and .cse18 .cse10 .cse11 .cse12 .cse13 .cse19) .cse6 .cse14) (or .cse4 (not (<= 6 |old(~a16~0)|)) (not (<= 1 |old(~a20~0)|)) .cse3 .cse6 (not (<= |old(~a20~0)| 1)))))) [2020-10-26 20:31:18,087 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,087 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,087 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-26 20:31:18,088 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-26 20:31:18,089 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,090 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-26 20:31:18,091 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-26 20:31:18,092 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 15) (= ~a20~0 1) (= 5 ~a16~0) (= ~a7~0 0) (= ~a17~0 1)) [2020-10-26 20:31:18,093 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-26 20:31:18,093 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-26 20:31:18,093 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (and (= ~a17~0 |old(~a17~0)|) (= ~a21~0 1) (= ~a20~0 |old(~a20~0)|) (= ~a8~0 15) (= 5 ~a16~0) (= ~a7~0 0)) (not (= |old(~a17~0)| 1)) (not (= |old(~a20~0)| 1)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (= |old(~a21~0)| 1)) (not (= ~a12~0 8)) (not (= |old(~a7~0)| 0))) [2020-10-26 20:31:18,093 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:31:18,093 INFO L270 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse5 (= 5 ~a16~0)) (.cse0 (= ~a20~0 0)) (.cse8 (= ~a17~0 1)) (.cse3 (= ~a16~0 4)) (.cse6 (= ~a7~0 0)) (.cse4 (= ~a20~0 1)) (.cse7 (<= ~a21~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a7~0 1)) (.cse9 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2 (<= ~a20~0 ~a17~0) (<= ~a17~0 ~a20~0) .cse3) (and .cse1 .cse2 (= 14 ~a8~0) .cse4 .cse5 (= ~a17~0 0)) (not (= |old(~a20~0)| 1)) (and .cse0 .cse1 .cse6) (and .cse0 .cse1 .cse2 .cse5) (and .cse0 .cse2 .cse7 .cse8) (and .cse1 .cse4 .cse6 .cse9) (not (= |old(~a21~0)| 1)) (and .cse1 .cse2 .cse4 .cse8) (not (= |old(~a17~0)| 1)) (and .cse1 .cse4 .cse6 .cse8) (and (<= 6 ~a16~0) .cse1 .cse4 .cse6) (and .cse1 .cse4 .cse3 .cse6) (not (= 5 |old(~a16~0)|)) (and .cse2 .cse4 .cse7) (not (= 15 |old(~a8~0)|)) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)) (and .cse1 .cse2 (<= ~a16~0 5) .cse9))) [2020-10-26 20:31:18,093 INFO L274 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-10-26 20:31:18,093 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-26 20:31:18,094 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse5 (= 5 ~a16~0)) (.cse0 (= ~a20~0 0)) (.cse8 (= ~a17~0 1)) (.cse3 (= ~a16~0 4)) (.cse6 (= ~a7~0 0)) (.cse4 (= ~a20~0 1)) (.cse7 (<= ~a21~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a7~0 1)) (.cse9 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2 (<= ~a20~0 ~a17~0) (<= ~a17~0 ~a20~0) .cse3) (and .cse1 .cse2 (= 14 ~a8~0) .cse4 .cse5 (= ~a17~0 0)) (not (= |old(~a20~0)| 1)) (and .cse0 .cse1 .cse6) (and .cse0 .cse1 .cse2 .cse5) (and .cse0 .cse2 .cse7 .cse8) (and .cse1 .cse4 .cse6 .cse9) (not (= |old(~a21~0)| 1)) (and .cse1 .cse2 .cse4 .cse8) (not (= |old(~a17~0)| 1)) (and .cse1 .cse4 .cse6 .cse8) (and (<= 6 ~a16~0) .cse1 .cse4 .cse6) (and .cse1 .cse4 .cse3 .cse6) (not (= 5 |old(~a16~0)|)) (and .cse2 .cse4 .cse7) (not (= 15 |old(~a8~0)|)) (not (= |old(~a7~0)| 0)) (not (= ~a12~0 8)) (and .cse1 .cse2 (<= ~a16~0 5) .cse9))) [2020-10-26 20:31:18,094 INFO L274 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-10-26 20:31:18,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:31:18 BoogieIcfgContainer [2020-10-26 20:31:18,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 20:31:18,121 INFO L168 Benchmark]: Toolchain (without parser) took 104567.91 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 865.1 MB). Free memory was 124.7 MB in the beginning and 660.5 MB in the end (delta: -535.8 MB). Peak memory consumption was 615.7 MB. Max. memory is 8.0 GB. [2020-10-26 20:31:18,121 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 20:31:18,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.87 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 96.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-26 20:31:18,122 INFO L168 Benchmark]: Boogie Preprocessor took 138.03 ms. Allocated memory is still 151.0 MB. Free memory was 96.7 MB in the beginning and 91.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-26 20:31:18,123 INFO L168 Benchmark]: RCFGBuilder took 1645.63 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 91.9 MB in the beginning and 161.3 MB in the end (delta: -69.4 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. [2020-10-26 20:31:18,124 INFO L168 Benchmark]: TraceAbstraction took 102128.74 ms. Allocated memory was 191.9 MB in the beginning and 1.0 GB in the end (delta: 824.2 MB). Free memory was 160.8 MB in the beginning and 660.5 MB in the end (delta: -499.7 MB). Peak memory consumption was 609.7 MB. Max. memory is 8.0 GB. [2020-10-26 20:31:18,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 638.87 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 96.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 138.03 ms. Allocated memory is still 151.0 MB. Free memory was 96.7 MB in the beginning and 91.9 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1645.63 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 91.9 MB in the beginning and 161.3 MB in the end (delta: -69.4 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 102128.74 ms. Allocated memory was 191.9 MB in the beginning and 1.0 GB in the end (delta: 824.2 MB). Free memory was 160.8 MB in the beginning and 660.5 MB in the end (delta: -499.7 MB). Peak memory consumption was 609.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((a20 == 0 && a21 == 1) && a7 == 1) && a20 <= a17) && a17 <= a20) && a16 == 4) || (((((a21 == 1 && a7 == 1) && 14 == a8) && a20 == 1) && 5 == a16) && a17 == 0)) || !(\old(a20) == 1)) || ((a20 == 0 && a21 == 1) && a7 == 0)) || (((a20 == 0 && a21 == 1) && a7 == 1) && 5 == a16)) || (((a20 == 0 && a7 == 1) && a21 <= 0) && a17 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && 15 <= a8)) || !(\old(a21) == 1)) || (((a21 == 1 && a7 == 1) && a20 == 1) && a17 == 1)) || !(\old(a17) == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || (((6 <= a16 && a21 == 1) && a20 == 1) && a7 == 0)) || (((a21 == 1 && a20 == 1) && a16 == 4) && a7 == 0)) || !(5 == \old(a16))) || ((a7 == 1 && a20 == 1) && a21 <= 0)) || !(15 == \old(a8))) || !(\old(a7) == 0)) || !(a12 == 8)) || (((a21 == 1 && a7 == 1) && a16 <= 5) && 15 <= a8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 94.6s, OverallIterations: 18, TraceHistogramMax: 6, AutomataDifference: 36.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 484 SDtfs, 7396 SDslu, 685 SDs, 0 SdLazy, 15531 SolverSat, 1770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3560occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 2005 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 516 PreInvPairs, 610 NumberOfFragments, 1215 HoareAnnotationTreeSize, 516 FomulaSimplifications, 29516 FormulaSimplificationTreeSizeReduction, 2.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 10917 FormulaSimplificationTreeSizeReductionInter, 5.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 54.8s InterpolantComputationTime, 3059 NumberOfCodeBlocks, 3059 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3041 ConstructedInterpolants, 0 QuantifiedInterpolants, 2541248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 1 PerfectInterpolantSequences, 2142/2363 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...