/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:18:49,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:18:49,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:18:49,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:18:49,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:18:49,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:18:49,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:18:49,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:18:49,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:18:49,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:18:49,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:18:49,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:18:49,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:18:49,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:18:49,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:18:49,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:18:49,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:18:49,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:18:49,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:18:49,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:18:49,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:18:49,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:18:49,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:18:49,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:18:49,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:18:49,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:18:49,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:18:49,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:18:49,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:18:49,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:18:49,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:18:49,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:18:49,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:18:49,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:18:49,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:18:49,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:18:49,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:18:49,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:18:49,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:18:49,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:18:49,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:18:49,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 15:18:49,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:18:49,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:18:49,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:18:49,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:18:49,654 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:18:49,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:18:49,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:18:49,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:18:49,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:18:49,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:18:49,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:18:49,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:18:49,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:18:49,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:18:49,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:18:49,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:18:49,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:18:49,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:18:49,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:18:49,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:18:49,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:18:49,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:18:49,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:18:49,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:18:49,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:18:49,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:18:49,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:18:49,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:18:49,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:18:49,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:18:50,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:18:50,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:18:50,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:18:50,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:18:50,087 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:18:50,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2020-10-28 15:18:50,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47300a9f8/4ffc6d312f2c4b31b4378a504721698e/FLAGde2f7d638 [2020-10-28 15:18:50,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:18:50,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-1.i [2020-10-28 15:18:50,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47300a9f8/4ffc6d312f2c4b31b4378a504721698e/FLAGde2f7d638 [2020-10-28 15:18:51,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47300a9f8/4ffc6d312f2c4b31b4378a504721698e [2020-10-28 15:18:51,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:18:51,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:18:51,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:18:51,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:18:51,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:18:51,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2185cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51, skipping insertion in model container [2020-10-28 15:18:51,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:18:51,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:18:51,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:18:51,474 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:18:51,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:18:51,514 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:18:51,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51 WrapperNode [2020-10-28 15:18:51,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:18:51,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:18:51,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:18:51,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:18:51,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... [2020-10-28 15:18:51,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:18:51,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:18:51,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:18:51,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:18:51,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:18:51,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:18:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:18:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:18:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:18:51,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:18:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:18:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:18:51,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:18:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:18:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:18:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:18:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:18:51,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-28 15:18:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:18:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:18:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:18:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:18:51,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:18:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:18:51,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:18:52,030 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:18:52,031 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:18:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:18:52 BoogieIcfgContainer [2020-10-28 15:18:52,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:18:52,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:18:52,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:18:52,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:18:52,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:18:51" (1/3) ... [2020-10-28 15:18:52,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfd0ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:18:52, skipping insertion in model container [2020-10-28 15:18:52,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:18:51" (2/3) ... [2020-10-28 15:18:52,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfd0ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:18:52, skipping insertion in model container [2020-10-28 15:18:52,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:18:52" (3/3) ... [2020-10-28 15:18:52,046 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2020-10-28 15:18:52,064 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:18:52,073 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:18:52,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:18:52,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:18:52,181 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:18:52,181 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:18:52,182 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:18:52,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:18:52,185 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:18:52,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:18:52,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:18:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-28 15:18:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:18:52,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:52,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:52,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1856646339, now seen corresponding path program 1 times [2020-10-28 15:18:52,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:52,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148486589] [2020-10-28 15:18:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:53,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:53,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:18:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:53,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-28 15:18:53,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:53,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:18:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 15:18:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:18:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:53,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:53,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:53,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:53,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:18:53,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:53,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:53,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:18:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:18:53,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148486589] [2020-10-28 15:18:53,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:18:53,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 15:18:53,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417822931] [2020-10-28 15:18:53,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:18:53,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:53,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:18:53,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:18:53,469 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 8 states. [2020-10-28 15:18:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:53,862 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2020-10-28 15:18:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:18:53,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-28 15:18:53,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:53,873 INFO L225 Difference]: With dead ends: 46 [2020-10-28 15:18:53,873 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 15:18:53,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:18:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 15:18:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-28 15:18:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 15:18:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-28 15:18:53,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2020-10-28 15:18:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:53,936 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-28 15:18:53,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:18:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-28 15:18:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:18:53,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:53,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:53,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:18:53,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:53,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1047299713, now seen corresponding path program 1 times [2020-10-28 15:18:53,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:53,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412856974] [2020-10-28 15:18:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:54,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:54,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:18:54,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:18:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 15:18:54,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:54,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:18:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:18:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:18:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:54,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:54,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:54,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:18:54,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:54,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:54,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:18:54,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412856974] [2020-10-28 15:18:54,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:18:54,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:18:54,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395580591] [2020-10-28 15:18:54,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:18:54,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:54,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:18:54,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:18:54,308 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2020-10-28 15:18:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:54,449 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-28 15:18:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:18:54,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 15:18:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:54,452 INFO L225 Difference]: With dead ends: 41 [2020-10-28 15:18:54,452 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 15:18:54,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:18:54,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 15:18:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-28 15:18:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 15:18:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 15:18:54,475 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2020-10-28 15:18:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:54,479 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 15:18:54,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:18:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 15:18:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 15:18:54,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:54,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:54,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:18:54,483 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1109888094, now seen corresponding path program 1 times [2020-10-28 15:18:54,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:54,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083056743] [2020-10-28 15:18:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:54,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 15:18:54,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 15:18:54,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:54,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:18:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 15:18:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:54,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:54,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 15:18:54,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:54,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:54,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:18:54,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:18:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:54,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:54,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:18:54,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:54,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 15:18:54,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:54,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:18:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:54,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:18:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:18:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:18:54,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083056743] [2020-10-28 15:18:54,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:18:54,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 15:18:54,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630282590] [2020-10-28 15:18:54,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:18:54,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:54,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:18:54,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:18:54,837 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-10-28 15:18:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:55,010 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-28 15:18:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:18:55,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 15:18:55,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:55,014 INFO L225 Difference]: With dead ends: 45 [2020-10-28 15:18:55,014 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 15:18:55,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:18:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 15:18:55,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 15:18:55,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 15:18:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-28 15:18:55,040 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2020-10-28 15:18:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:55,042 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-28 15:18:55,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:18:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-28 15:18:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 15:18:55,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:55,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:55,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:18:55,048 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:55,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1339988677, now seen corresponding path program 2 times [2020-10-28 15:18:55,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:55,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908722670] [2020-10-28 15:18:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:55,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:55,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:56,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 15:18:56,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:18:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-10-28 15:18:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:56,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:18:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:18:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 15:18:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:18:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:18:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:56,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:56,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:18:56,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:18:56,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:56,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:18:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:18:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:18:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:18:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:18:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:18:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:56,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:18:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:18:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:18:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:18:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:56,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:18:56,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:18:56,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:18:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:18:56,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:18:56,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:18:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:18:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:18:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:18:56,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:18:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 15:18:56,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908722670] [2020-10-28 15:18:56,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:18:56,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 15:18:56,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793866147] [2020-10-28 15:18:56,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:18:56,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:18:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:18:56,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:18:56,452 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-10-28 15:18:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:18:56,643 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-28 15:18:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:18:56,644 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-28 15:18:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:18:56,645 INFO L225 Difference]: With dead ends: 49 [2020-10-28 15:18:56,646 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 15:18:56,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:18:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 15:18:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-28 15:18:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 15:18:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-28 15:18:56,656 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2020-10-28 15:18:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:18:56,656 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-28 15:18:56,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:18:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-28 15:18:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 15:18:56,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:18:56,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:18:56,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:18:56,659 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:18:56,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:18:56,659 INFO L82 PathProgramCache]: Analyzing trace with hash -774434536, now seen corresponding path program 3 times [2020-10-28 15:18:56,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:18:56,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974928336] [2020-10-28 15:18:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:18:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:18:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:57,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:18:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:01,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 15:19:01,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:19:01,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 15:19:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:01,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:19:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:19:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 15:19:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:01,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:01,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:19:01,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:01,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:01,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:19:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:01,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:01,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:01,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:01,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:01,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:01,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:19:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:01,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:01,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:01,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:01,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:01,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:01,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:01,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:01,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:19:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:19:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:01,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:01,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:19:01,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:01,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 15:19:01,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974928336] [2020-10-28 15:19:01,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:01,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:19:01,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417378466] [2020-10-28 15:19:01,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:19:01,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:01,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:19:01,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:19:01,855 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2020-10-28 15:19:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:02,103 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-28 15:19:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:19:02,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-28 15:19:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:02,105 INFO L225 Difference]: With dead ends: 53 [2020-10-28 15:19:02,105 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 15:19:02,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:19:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 15:19:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-28 15:19:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 15:19:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-28 15:19:02,116 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 39 [2020-10-28 15:19:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:02,117 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-28 15:19:02,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:19:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-28 15:19:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 15:19:02,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:02,119 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:02,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:19:02,119 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash 600150005, now seen corresponding path program 4 times [2020-10-28 15:19:02,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:02,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109944511] [2020-10-28 15:19:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:04,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 15:19:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 15:19:07,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 15:19:07,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:07,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:19:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:19:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 15:19:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:07,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:07,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:07,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:19:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:07,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:07,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:19:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:07,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:07,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:07,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:07,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:07,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:07,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:07,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:19:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:07,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:07,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:07,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:19:07,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:07,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:07,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:19:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:07,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:07,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:07,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:07,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:07,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:07,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:19:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:07,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:19:07,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:07,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:07,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:19:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 15:19:07,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109944511] [2020-10-28 15:19:07,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:07,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:19:07,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742681909] [2020-10-28 15:19:07,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:19:07,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:07,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:19:07,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:19:07,369 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-28 15:19:07,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:19:07,724 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-28 15:19:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:19:07,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-28 15:19:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:19:07,729 INFO L225 Difference]: With dead ends: 57 [2020-10-28 15:19:07,729 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 15:19:07,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:19:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 15:19:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-28 15:19:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 15:19:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-28 15:19:07,755 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 47 [2020-10-28 15:19:07,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:19:07,755 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-28 15:19:07,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:19:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-28 15:19:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 15:19:07,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:19:07,764 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:19:07,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:19:07,764 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:19:07,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:19:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1433002450, now seen corresponding path program 5 times [2020-10-28 15:19:07,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:19:07,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866545752] [2020-10-28 15:19:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:19:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:07,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:08,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:08,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:10,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:11,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:12,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:12,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:12,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 15:19:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 15:19:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 15:19:12,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:12,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 15:19:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:19:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 15:19:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 15:19:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:19:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:23,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:19:23,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:23,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:19:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:19:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:23,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:19:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:23,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:23,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:23,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:19:23,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:23,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:23,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:23,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:19:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:23,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:23,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:23,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 15:19:23,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:23,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:19:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:23,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:19:23,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:19:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:23,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:23,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:23,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 15:19:23,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:23,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:23,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:19:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:23,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:23,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:23,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:23,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:23,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 15:19:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:19:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:19:23,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:19:23,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:19:23,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:19:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:19:23,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:19:23,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:19:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:19:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:19:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:19:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:19:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 23 proven. 50 refuted. 9 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 15:19:23,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866545752] [2020-10-28 15:19:23,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:19:23,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 15:19:23,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541541859] [2020-10-28 15:19:23,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 15:19:23,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:19:23,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 15:19:23,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=126, Unknown=5, NotChecked=0, Total=156 [2020-10-28 15:19:23,920 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 13 states. [2020-10-28 15:20:33,475 WARN L193 SmtUtils]: Spent 12.58 s on a formula simplification that was a NOOP. DAG size: 48 [2020-10-28 15:20:37,682 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 4)) (<= (let ((.cse0 (div (* c_main_~x~0 2) 4294967296))) (+ (* 2147483648 (div (+ c_main_~x~0 (* .cse0 (- 2147483648)) 2147483645) 2147483648)) (* 2147483648 .cse0) 2)) c_main_~x~0)) is different from false [2020-10-28 15:20:58,607 WARN L193 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 16 [2020-10-28 15:21:00,740 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_main_~x~0 (+ (* 4294967296 (div c_main_~x~0 4294967296)) 4)) (= |c_#t~string0.offset| |c_old(#t~string0.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string1.base| |c_old(#t~string1.base)|) (<= (+ (* 2147483648 (div (+ c_main_~x~0 2147483644) 2147483648)) 3) c_main_~x~0) (= |c_#NULL.base| |c_old(#NULL.base)|) (= |c_#t~string0.base| |c_old(#t~string0.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string1.offset| |c_old(#t~string1.offset)|)) is different from false [2020-10-28 15:21:36,277 WARN L193 SmtUtils]: Spent 16.72 s on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2020-10-28 15:21:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:21:57,452 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-28 15:21:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 15:21:57,452 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-28 15:21:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:21:57,454 INFO L225 Difference]: With dead ends: 61 [2020-10-28 15:21:57,455 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 15:21:57,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 118.3s TimeCoverageRelationStatistics Valid=115, Invalid=457, Unknown=36, NotChecked=94, Total=702 [2020-10-28 15:21:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 15:21:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-28 15:21:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 15:21:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-28 15:21:57,470 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 55 [2020-10-28 15:21:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:21:57,470 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-28 15:21:57,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 15:21:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-28 15:21:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 15:21:57,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:21:57,472 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:21:57,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:21:57,472 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:21:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:21:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1228998319, now seen corresponding path program 6 times [2020-10-28 15:21:57,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:21:57,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533316683] [2020-10-28 15:21:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:21:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:21:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:21:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:01,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:01,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:02,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 15:22:02,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 15:22:02,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 15:22:02,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:02,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 15:22:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:22:02,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 15:22:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:22:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:22:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:02,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:22:02,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:22:02,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:02,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:22:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:02,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:22:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:22:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:22:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:02,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:02,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:02,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:02,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:02,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:02,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:02,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:22:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:02,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 15:22:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:02,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:22:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:22:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:22:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:02,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:02,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:22:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:02,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:22:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:03,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:22:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:03,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 15:22:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:03,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:03,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:03,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:03,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:22:03,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:03,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:03,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 15:22:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:03,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:03,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:03,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:03,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:03,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 27 proven. 84 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-28 15:22:03,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533316683] [2020-10-28 15:22:03,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:22:03,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 15:22:03,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159778912] [2020-10-28 15:22:03,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 15:22:03,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:22:03,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 15:22:03,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:22:03,047 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 14 states. [2020-10-28 15:22:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:22:08,546 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-28 15:22:08,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 15:22:08,547 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-28 15:22:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:22:08,548 INFO L225 Difference]: With dead ends: 65 [2020-10-28 15:22:08,548 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 15:22:08,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-10-28 15:22:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 15:22:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-28 15:22:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-28 15:22:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-28 15:22:08,575 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 63 [2020-10-28 15:22:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:22:08,577 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-28 15:22:08,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 15:22:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-28 15:22:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 15:22:08,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:22:08,581 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:22:08,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:22:08,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:22:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:22:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash 348651148, now seen corresponding path program 7 times [2020-10-28 15:22:08,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:22:08,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551537555] [2020-10-28 15:22:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:22:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:09,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:11,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 15:22:13,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:22:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 15:22:13,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 15:22:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:22:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 15:22:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:22:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:22:13,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:22:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:13,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:13,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:22:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:13,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:22:13,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:13,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:22:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:13,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:22:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:13,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:22:13,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 15:22:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:13,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:13,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:13,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:13,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 15:22:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:13,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:13,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:13,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:22:13,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:13,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:22:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:22:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 15:22:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:14,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:14,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:14,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:14,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:14,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:14,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 43 proven. 101 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 15:22:14,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551537555] [2020-10-28 15:22:14,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:22:14,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 15:22:14,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850712007] [2020-10-28 15:22:14,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 15:22:14,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:22:14,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 15:22:14,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:22:14,020 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 15 states. [2020-10-28 15:22:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:22:27,647 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-28 15:22:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 15:22:27,648 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-28 15:22:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:22:27,650 INFO L225 Difference]: With dead ends: 69 [2020-10-28 15:22:27,650 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 15:22:27,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2020-10-28 15:22:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 15:22:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-28 15:22:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 15:22:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-28 15:22:27,663 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 71 [2020-10-28 15:22:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:22:27,664 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-28 15:22:27,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 15:22:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-28 15:22:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 15:22:27,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:22:27,665 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:22:27,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:22:27,666 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:22:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:22:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash 8112489, now seen corresponding path program 8 times [2020-10-28 15:22:27,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:22:27,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549893833] [2020-10-28 15:22:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:22:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 15:22:32,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 15:22:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 15:22:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 15:22:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:22:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 15:22:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:22:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:22:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:22:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:22:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:22:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:22:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:22:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:22:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:22:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 15:22:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 15:22:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 15:22:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:32,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 15:22:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:32,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:32,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:32,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:32,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:32,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:32,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:32,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 15:22:32,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549893833] [2020-10-28 15:22:32,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:22:32,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 15:22:32,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822818925] [2020-10-28 15:22:32,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 15:22:32,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:22:32,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 15:22:32,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:22:32,980 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 12 states. [2020-10-28 15:22:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:22:33,695 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-28 15:22:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 15:22:33,695 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-28 15:22:33,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:22:33,697 INFO L225 Difference]: With dead ends: 73 [2020-10-28 15:22:33,697 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 15:22:33,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-28 15:22:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 15:22:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-28 15:22:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-28 15:22:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-10-28 15:22:33,726 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 79 [2020-10-28 15:22:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:22:33,726 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-10-28 15:22:33,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 15:22:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-10-28 15:22:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 15:22:33,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:22:33,732 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:22:33,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:22:33,732 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:22:33,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:22:33,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2015795386, now seen corresponding path program 9 times [2020-10-28 15:22:33,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:22:33,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778916227] [2020-10-28 15:22:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:22:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:34,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:34,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:34,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:38,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:38,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 15:22:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:22:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:22:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:22:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:22:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:22:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:39,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 15:22:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:22:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 15:22:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:22:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 15:22:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 15:22:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 15:22:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:39,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 15:22:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:22:39,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 15:22:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:22:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:22:39,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:22:39,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:22:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:22:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:22:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:22:39,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:22:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:22:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:22:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:22:39,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:22:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 39 proven. 183 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-28 15:22:39,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778916227] [2020-10-28 15:22:39,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:22:39,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 15:22:39,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142872952] [2020-10-28 15:22:39,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 15:22:39,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:22:39,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 15:22:39,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:22:39,488 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 17 states. [2020-10-28 15:22:42,372 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-28 15:22:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:22:44,178 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-28 15:22:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 15:22:44,178 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 87 [2020-10-28 15:22:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:22:44,180 INFO L225 Difference]: With dead ends: 77 [2020-10-28 15:22:44,181 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 15:22:44,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 15:22:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 15:22:44,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-28 15:22:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 15:22:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-28 15:22:44,207 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 87 [2020-10-28 15:22:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:22:44,211 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-28 15:22:44,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 15:22:44,211 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-28 15:22:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 15:22:44,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:22:44,216 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:22:44,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:22:44,217 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:22:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:22:44,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1499322403, now seen corresponding path program 10 times [2020-10-28 15:22:44,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:22:44,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858255190] [2020-10-28 15:22:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:22:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 15:22:44,259 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 15:22:44,259 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 15:22:44,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:22:44,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:22:44 BoogieIcfgContainer [2020-10-28 15:22:44,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:22:44,298 INFO L168 Benchmark]: Toolchain (without parser) took 233059.76 ms. Allocated memory was 153.1 MB in the beginning and 576.7 MB in the end (delta: 423.6 MB). Free memory was 129.3 MB in the beginning and 373.2 MB in the end (delta: -243.9 MB). Peak memory consumption was 180.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:22:44,298 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 153.1 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:22:44,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.89 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:22:44,304 INFO L168 Benchmark]: Boogie Preprocessor took 43.57 ms. Allocated memory is still 153.1 MB. Free memory was 118.7 MB in the beginning and 117.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 15:22:44,305 INFO L168 Benchmark]: RCFGBuilder took 473.03 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 104.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:22:44,306 INFO L168 Benchmark]: TraceAbstraction took 232258.75 ms. Allocated memory was 153.1 MB in the beginning and 576.7 MB in the end (delta: 423.6 MB). Free memory was 103.9 MB in the beginning and 373.2 MB in the end (delta: -269.3 MB). Peak memory consumption was 155.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:22:44,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 153.1 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.89 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 118.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.57 ms. Allocated memory is still 153.1 MB. Free memory was 118.7 MB in the beginning and 117.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 473.03 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 104.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 232258.75 ms. Allocated memory was 153.1 MB in the beginning and 576.7 MB in the end (delta: 423.6 MB). Free memory was 103.9 MB in the beginning and 373.2 MB in the end (delta: -269.3 MB). Peak memory consumption was 155.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND TRUE x<10 [L26] sn = sn + (2) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 [L25] COND FALSE !(x<10) [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND TRUE !(cond) [L15] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sum03-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 232.0s, OverallIterations: 12, TraceHistogramMax: 11, AutomataDifference: 179.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 219 SDtfs, 291 SDslu, 493 SDs, 0 SdLazy, 1916 SolverSat, 252 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 65.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 123.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 51.2s InterpolantComputationTime, 620 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 176372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 615/1230 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 incorrect! Received shutdown request...