/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-10-29 10:00:54,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 10:00:54,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 10:00:54,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 10:00:54,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 10:00:54,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 10:00:54,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 10:00:54,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 10:00:54,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 10:00:54,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 10:00:54,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 10:00:54,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 10:00:54,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 10:00:54,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 10:00:54,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 10:00:54,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 10:00:54,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 10:00:54,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 10:00:54,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 10:00:54,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 10:00:54,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 10:00:54,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 10:00:54,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 10:00:54,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 10:00:54,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 10:00:54,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 10:00:54,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 10:00:54,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 10:00:54,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 10:00:54,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 10:00:54,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 10:00:54,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 10:00:54,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 10:00:54,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 10:00:54,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 10:00:54,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 10:00:54,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 10:00:54,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 10:00:54,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 10:00:54,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 10:00:54,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 10:00:54,763 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 [2020-10-29 10:00:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 10:00:54,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 10:00:54,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 10:00:54,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 10:00:54,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 10:00:54,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 10:00:54,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 10:00:54,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 10:00:54,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 10:00:54,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 10:00:54,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 10:00:54,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 10:00:54,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 10:00:54,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 10:00:54,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 10:00:54,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 10:00:54,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 10:00:54,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 10:00:54,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 10:00:54,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 10:00:54,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 10:00:54,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 10:00:54,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 10:00:54,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 10:00:54,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 10:00:54,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 10:00:54,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 10:00:54,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 10:00:54,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 10:00:54,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 10:00:55,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 10:00:55,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 10:00:55,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 10:00:55,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 10:00:55,254 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 10:00:55,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2020-10-29 10:00:55,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3a8d89a4/866f29dd3712411dbdb2c958a24ac29f/FLAGb759cc5ce [2020-10-29 10:00:55,838 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 10:00:55,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum03-1.i [2020-10-29 10:00:55,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3a8d89a4/866f29dd3712411dbdb2c958a24ac29f/FLAGb759cc5ce [2020-10-29 10:00:56,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3a8d89a4/866f29dd3712411dbdb2c958a24ac29f [2020-10-29 10:00:56,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 10:00:56,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 10:00:56,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 10:00:56,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 10:00:56,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 10:00:56,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ceb0f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56, skipping insertion in model container [2020-10-29 10:00:56,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 10:00:56,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 10:00:56,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:00:56,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 10:00:56,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:00:56,557 INFO L208 MainTranslator]: Completed translation [2020-10-29 10:00:56,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56 WrapperNode [2020-10-29 10:00:56,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 10:00:56,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 10:00:56,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 10:00:56,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 10:00:56,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (1/1) ... [2020-10-29 10:00:56,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 10:00:56,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 10:00:56,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 10:00:56,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 10:00:56,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (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 [2020-10-29 10:00:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 10:00:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 10:00:56,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 10:00:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 10:00:56,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 10:00:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 10:00:56,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 10:00:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 10:00:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 10:00:56,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 10:00:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 10:00:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 10:00:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 10:00:56,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 10:00:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 10:00:56,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 10:00:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 10:00:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 10:00:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 10:00:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 10:00:57,202 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 10:00:57,203 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 10:00:57,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:00:57 BoogieIcfgContainer [2020-10-29 10:00:57,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 10:00:57,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 10:00:57,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 10:00:57,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 10:00:57,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 10:00:56" (1/3) ... [2020-10-29 10:00:57,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f51549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:00:57, skipping insertion in model container [2020-10-29 10:00:57,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:00:56" (2/3) ... [2020-10-29 10:00:57,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f51549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:00:57, skipping insertion in model container [2020-10-29 10:00:57,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:00:57" (3/3) ... [2020-10-29 10:00:57,213 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2020-10-29 10:00:57,224 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 10:00:57,229 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 10:00:57,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 10:00:57,267 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 10:00:57,268 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 10:00:57,268 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 10:00:57,268 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 10:00:57,268 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 10:00:57,268 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 10:00:57,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 10:00:57,269 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 10:00:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 10:00:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 10:00:57,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:57,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:57,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:57,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1856646339, now seen corresponding path program 1 times [2020-10-29 10:00:57,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:57,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275902020] [2020-10-29 10:00:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:57,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:57,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:00:57,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-29 10:00:57,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:57,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:00:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:00:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 10:00:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:58,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:58,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:58,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:00:58,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:58,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:58,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275902020] [2020-10-29 10:00:58,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:00:58,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 10:00:58,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557934282] [2020-10-29 10:00:58,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:00:58,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:58,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:00:58,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:00:58,207 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 8 states. [2020-10-29 10:00:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:58,566 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2020-10-29 10:00:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:00:58,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-29 10:00:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:58,575 INFO L225 Difference]: With dead ends: 46 [2020-10-29 10:00:58,575 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 10:00:58,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:00:58,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 10:00:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-29 10:00:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 10:00:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-29 10:00:58,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2020-10-29 10:00:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:58,623 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-29 10:00:58,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:00:58,624 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-29 10:00:58,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 10:00:58,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:58,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:58,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 10:00:58,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:58,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:58,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1047299713, now seen corresponding path program 1 times [2020-10-29 10:00:58,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:58,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330062575] [2020-10-29 10:00:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:58,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 10:00:58,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 10:00:58,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-29 10:00:58,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:58,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:00:58,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:58,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 10:00:58,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:58,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:58,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:00:58,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:58,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:58,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:58,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:58,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330062575] [2020-10-29 10:00:58,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:00:58,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 10:00:58,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645840217] [2020-10-29 10:00:58,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:00:58,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:00:58,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:00:58,942 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-10-29 10:00:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:59,142 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-29 10:00:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 10:00:59,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 10:00:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:59,145 INFO L225 Difference]: With dead ends: 40 [2020-10-29 10:00:59,145 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 10:00:59,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:00:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 10:00:59,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-29 10:00:59,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 10:00:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-29 10:00:59,157 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2020-10-29 10:00:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:59,157 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-29 10:00:59,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:00:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-29 10:00:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 10:00:59,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:59,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:59,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 10:00:59,159 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1109888094, now seen corresponding path program 1 times [2020-10-29 10:00:59,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:59,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564289699] [2020-10-29 10:00:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:59,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 10:00:59,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 10:00:59,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:59,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:00:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:00:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 10:00:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:00:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:00:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:59,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:59,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:00:59,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:59,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:00:59,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:59,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:00:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:00:59,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:00:59,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:00:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 10:00:59,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:00:59,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:00:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:00:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:00:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:00:59,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:00:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:00:59,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564289699] [2020-10-29 10:00:59,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:00:59,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 10:00:59,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181540256] [2020-10-29 10:00:59,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 10:00:59,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:00:59,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 10:00:59,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 10:00:59,398 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-29 10:00:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:00:59,541 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-29 10:00:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 10:00:59,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-29 10:00:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:00:59,543 INFO L225 Difference]: With dead ends: 53 [2020-10-29 10:00:59,543 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 10:00:59,544 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 [2020-10-29 10:00:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 10:00:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-29 10:00:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 10:00:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-29 10:00:59,570 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 23 [2020-10-29 10:00:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:00:59,571 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-29 10:00:59,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 10:00:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-29 10:00:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 10:00:59,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:00:59,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:00:59,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 10:00:59,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:00:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:00:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1339988677, now seen corresponding path program 2 times [2020-10-29 10:00:59,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:00:59,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752270583] [2020-10-29 10:00:59,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:00:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:00:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:00:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:00,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 10:01:00,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:01:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-10-29 10:01:00,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:00,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 10:01:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 10:01:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:00,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:00,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:00,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:01:00,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:00,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:00,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:00,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:00,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:01:00,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:00,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:00,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:00,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:00,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:00,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:01:00,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:00,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:00,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 10:01:00,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752270583] [2020-10-29 10:01:00,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:00,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 10:01:00,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145909673] [2020-10-29 10:01:00,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 10:01:00,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:00,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 10:01:00,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:01:00,980 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-10-29 10:01:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:01,185 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2020-10-29 10:01:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 10:01:01,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-29 10:01:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:01,187 INFO L225 Difference]: With dead ends: 49 [2020-10-29 10:01:01,187 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 10:01:01,188 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 [2020-10-29 10:01:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 10:01:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-29 10:01:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 10:01:01,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-29 10:01:01,197 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2020-10-29 10:01:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:01,198 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-29 10:01:01,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 10:01:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-29 10:01:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 10:01:01,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:01,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:01,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 10:01:01,200 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash -774434536, now seen corresponding path program 3 times [2020-10-29 10:01:01,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:01,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365165402] [2020-10-29 10:01:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:02,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:03,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:06,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:06,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:06,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:06,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:06,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:06,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:06,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:06,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:06,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:06,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:01:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:06,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 10:01:06,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365165402] [2020-10-29 10:01:06,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:06,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 10:01:06,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501289170] [2020-10-29 10:01:06,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 10:01:06,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:06,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 10:01:06,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 10:01:06,378 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2020-10-29 10:01:06,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:06,613 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-29 10:01:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 10:01:06,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2020-10-29 10:01:06,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:06,615 INFO L225 Difference]: With dead ends: 53 [2020-10-29 10:01:06,615 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 10:01:06,616 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 [2020-10-29 10:01:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 10:01:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-29 10:01:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 10:01:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-29 10:01:06,625 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 39 [2020-10-29 10:01:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:06,625 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-29 10:01:06,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 10:01:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-29 10:01:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 10:01:06,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:06,627 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:06,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 10:01:06,627 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:06,628 INFO L82 PathProgramCache]: Analyzing trace with hash 600150005, now seen corresponding path program 4 times [2020-10-29 10:01:06,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:06,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977500598] [2020-10-29 10:01:06,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 10:01:11,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 10:01:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 10:01:11,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 10:01:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:11,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 10:01:11,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:11,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:11,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:11,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:11,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:11,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:11,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:11,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:11,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:11,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:11,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:11,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:11,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:11,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 10:01:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:11,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:11,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:11,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:11,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 10:01:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:11,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 10:01:11,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977500598] [2020-10-29 10:01:11,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:11,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 10:01:11,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142270275] [2020-10-29 10:01:11,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 10:01:11,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:11,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 10:01:11,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 10:01:11,862 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-29 10:01:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:12,185 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-29 10:01:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 10:01:12,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-10-29 10:01:12,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:12,186 INFO L225 Difference]: With dead ends: 57 [2020-10-29 10:01:12,187 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 10:01:12,187 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 [2020-10-29 10:01:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 10:01:12,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-29 10:01:12,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 10:01:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-10-29 10:01:12,197 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 47 [2020-10-29 10:01:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:12,197 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-10-29 10:01:12,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 10:01:12,198 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-10-29 10:01:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 10:01:12,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:12,199 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:12,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 10:01:12,200 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:12,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1433002450, now seen corresponding path program 5 times [2020-10-29 10:01:12,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:12,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467643785] [2020-10-29 10:01:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:12,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:13,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:14,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:15,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 10:01:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 10:01:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 10:01:17,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 10:01:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 10:01:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:17,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:17,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:17,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:17,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:17,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:17,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:17,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:17,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:17,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:17,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 10:01:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:17,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:17,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:17,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:17,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:17,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:01:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:17,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:17,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:17,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:17,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:17,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 10:01:17,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467643785] [2020-10-29 10:01:17,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:17,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 10:01:17,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051711878] [2020-10-29 10:01:17,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 10:01:17,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:17,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 10:01:17,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 10:01:17,448 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 9 states. [2020-10-29 10:01:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:17,858 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-29 10:01:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 10:01:17,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-29 10:01:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:17,859 INFO L225 Difference]: With dead ends: 61 [2020-10-29 10:01:17,859 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 10:01:17,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 10:01:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 10:01:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-29 10:01:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 10:01:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-29 10:01:17,870 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 55 [2020-10-29 10:01:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:17,870 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-29 10:01:17,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 10:01:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-29 10:01:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 10:01:17,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:17,872 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:17,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 10:01:17,872 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:17,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1228998319, now seen corresponding path program 6 times [2020-10-29 10:01:17,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:17,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632805763] [2020-10-29 10:01:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:17,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:18,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:20,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:22,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 10:01:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-29 10:01:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 10:01:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:22,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 10:01:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 10:01:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:23,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:23,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:23,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:23,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:23,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:23,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:23,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:23,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:23,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:23,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:23,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 10:01:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:23,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:23,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:01:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:23,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 10:01:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:23,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:23,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:23,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:23,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:23,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:23,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 10:01:23,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632805763] [2020-10-29 10:01:23,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:23,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 10:01:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94243942] [2020-10-29 10:01:23,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 10:01:23,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:23,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 10:01:23,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 10:01:23,135 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 10 states. [2020-10-29 10:01:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:23,642 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-29 10:01:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 10:01:23,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-29 10:01:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:23,645 INFO L225 Difference]: With dead ends: 65 [2020-10-29 10:01:23,645 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 10:01:23,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-29 10:01:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 10:01:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-29 10:01:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 10:01:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-10-29 10:01:23,656 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 63 [2020-10-29 10:01:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:23,656 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-10-29 10:01:23,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 10:01:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-10-29 10:01:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 10:01:23,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:23,661 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:23,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 10:01:23,661 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:23,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:23,663 INFO L82 PathProgramCache]: Analyzing trace with hash 348651148, now seen corresponding path program 7 times [2020-10-29 10:01:23,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:23,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046992205] [2020-10-29 10:01:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:24,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:26,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 10:01:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 10:01:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 10:01:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 10:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 10:01:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:28,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:28,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 10:01:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:01:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:28,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 10:01:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 10:01:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:28,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:28,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:28,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:28,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 10:01:28,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:28,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 28 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-29 10:01:28,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046992205] [2020-10-29 10:01:28,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:28,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 10:01:28,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357334083] [2020-10-29 10:01:28,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 10:01:28,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 10:01:28,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 10:01:28,974 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 11 states. [2020-10-29 10:01:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:29,540 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2020-10-29 10:01:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 10:01:29,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-29 10:01:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:29,542 INFO L225 Difference]: With dead ends: 69 [2020-10-29 10:01:29,542 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 10:01:29,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-29 10:01:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 10:01:29,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-29 10:01:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 10:01:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-29 10:01:29,554 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 71 [2020-10-29 10:01:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:29,554 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-29 10:01:29,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 10:01:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-29 10:01:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 10:01:29,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:29,556 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:29,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 10:01:29,556 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 8112489, now seen corresponding path program 8 times [2020-10-29 10:01:29,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:29,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993200153] [2020-10-29 10:01:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:33,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 10:01:34,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 10:01:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 10:01:34,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 10:01:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 10:01:34,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:34,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:34,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:34,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 10:01:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:34,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:01:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:34,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 10:01:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 10:01:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:34,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 10:01:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:34,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:34,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:34,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:34,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 10:01:34,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993200153] [2020-10-29 10:01:34,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:34,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 10:01:34,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487807471] [2020-10-29 10:01:34,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 10:01:34,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:34,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 10:01:34,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-29 10:01:34,898 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 12 states. [2020-10-29 10:01:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:35,596 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-29 10:01:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 10:01:35,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-29 10:01:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:35,598 INFO L225 Difference]: With dead ends: 73 [2020-10-29 10:01:35,598 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 10:01:35,602 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 [2020-10-29 10:01:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 10:01:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-29 10:01:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 10:01:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-10-29 10:01:35,626 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 79 [2020-10-29 10:01:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:35,628 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-10-29 10:01:35,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 10:01:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-10-29 10:01:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 10:01:35,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:35,634 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:35,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 10:01:35,634 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:35,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:35,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2015795386, now seen corresponding path program 9 times [2020-10-29 10:01:35,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:35,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891814838] [2020-10-29 10:01:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:35,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:36,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:36,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 10:01:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 10:01:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 10:01:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 10:01:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 10:01:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 10:01:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 10:01:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 10:01:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 10:01:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 10:01:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 10:01:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 10:01:40,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 10:01:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:40,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:40,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 10:01:40,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:40,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 10:01:40,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:40,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 10:01:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 10:01:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 36 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 10:01:40,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891814838] [2020-10-29 10:01:40,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 10:01:40,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 10:01:40,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82513016] [2020-10-29 10:01:40,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 10:01:40,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:40,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 10:01:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-29 10:01:40,968 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 13 states. [2020-10-29 10:01:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:41,721 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2020-10-29 10:01:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 10:01:41,724 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-10-29 10:01:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:41,725 INFO L225 Difference]: With dead ends: 77 [2020-10-29 10:01:41,726 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 10:01:41,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-29 10:01:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 10:01:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-10-29 10:01:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 10:01:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-29 10:01:41,737 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 87 [2020-10-29 10:01:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:41,737 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-29 10:01:41,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 10:01:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-29 10:01:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 10:01:41,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:41,739 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:41,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 10:01:41,739 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:41,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1499322403, now seen corresponding path program 10 times [2020-10-29 10:01:41,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:41,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397022048] [2020-10-29 10:01:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 10:01:41,771 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 10:01:41,771 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 10:01:41,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 10:01:41,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 10:01:41 BoogieIcfgContainer [2020-10-29 10:01:41,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 10:01:41,798 INFO L168 Benchmark]: Toolchain (without parser) took 45602.51 ms. Allocated memory was 152.0 MB in the beginning and 669.0 MB in the end (delta: 516.9 MB). Free memory was 107.6 MB in the beginning and 335.0 MB in the end (delta: -227.4 MB). Peak memory consumption was 290.2 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:41,798 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 10:01:41,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.59 ms. Allocated memory is still 152.0 MB. Free memory was 135.6 MB in the beginning and 126.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:41,800 INFO L168 Benchmark]: Boogie Preprocessor took 104.11 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 135.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:41,800 INFO L168 Benchmark]: RCFGBuilder took 539.09 ms. Allocated memory is still 152.0 MB. Free memory was 135.2 MB in the beginning and 122.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:41,801 INFO L168 Benchmark]: TraceAbstraction took 44589.39 ms. Allocated memory was 152.0 MB in the beginning and 669.0 MB in the end (delta: 516.9 MB). Free memory was 121.9 MB in the beginning and 335.0 MB in the end (delta: -213.1 MB). Peak memory consumption was 304.3 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:41,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.59 ms. Allocated memory is still 152.0 MB. Free memory was 135.6 MB in the beginning and 126.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.11 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 135.5 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 539.09 ms. Allocated memory is still 152.0 MB. Free memory was 135.2 MB in the beginning and 122.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 44589.39 ms. Allocated memory was 152.0 MB in the beginning and 669.0 MB in the end (delta: 516.9 MB). Free memory was 121.9 MB in the beginning and 335.0 MB in the end (delta: -213.1 MB). Peak memory consumption was 304.3 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: 44.5s, OverallIterations: 12, TraceHistogramMax: 11, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 230 SDtfs, 302 SDslu, 328 SDs, 0 SdLazy, 1586 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.2s 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 39.3s InterpolantComputationTime, 620 NumberOfCodeBlocks, 620 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 514 ConstructedInterpolants, 0 QuantifiedInterpolants, 125380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 660/1230 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...