/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:58:17,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:58:17,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:58:17,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:58:17,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:58:17,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:58:17,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:58:17,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:58:17,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:58:17,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:58:17,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:58:17,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:58:17,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:58:17,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:58:17,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:58:17,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:58:17,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:58:17,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:58:17,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:58:17,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:58:17,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:58:17,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:58:17,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:58:17,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:58:17,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:58:17,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:58:17,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:58:17,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:58:17,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:58:17,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 20:58:17,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 20:58:17,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 20:58:17,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 20:58:17,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 20:58:17,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 20:58:17,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 20:58:17,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 20:58:17,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 20:58:17,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:58:17,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:58:17,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:58:17,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 20:58:17,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:58:17,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:58:17,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:58:17,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:58:17,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:58:17,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:58:17,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:58:17,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:58:17,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:58:17,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:58:17,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:58:17,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:58:17,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:58:17,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:58:17,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:58:17,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:58:17,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:58:17,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:58:17,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:58:17,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:58:17,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:58:17,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:58:17,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:58:17,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:58:17,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:58:17,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:58:17,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:58:17,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:58:17,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:58:17,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:58:18,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:58:18,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:58:18,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:58:18,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:58:18,144 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:58:18,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label11.c [2020-10-26 20:58:18,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8cec3da0/b0608c17aa8841eea486957882ecc29f/FLAG3df2ef99d [2020-10-26 20:58:19,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:58:19,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label11.c [2020-10-26 20:58:19,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8cec3da0/b0608c17aa8841eea486957882ecc29f/FLAG3df2ef99d [2020-10-26 20:58:19,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8cec3da0/b0608c17aa8841eea486957882ecc29f [2020-10-26 20:58:19,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:58:19,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:58:19,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:58:19,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:58:19,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:58:19,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:58:19" (1/1) ... [2020-10-26 20:58:19,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8f5d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:19, skipping insertion in model container [2020-10-26 20:58:19,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:58:19" (1/1) ... [2020-10-26 20:58:19,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:58:19,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:58:21,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:58:21,550 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:58:22,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:58:22,290 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:58:22,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22 WrapperNode [2020-10-26 20:58:22,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:58:22,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:58:22,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:58:22,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:58:22,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... [2020-10-26 20:58:22,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:58:22,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:58:22,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:58:22,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:58:22,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:58:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:58:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:58:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:58:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:58:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 20:58:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 20:58:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 20:58:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:58:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:58:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 20:58:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 20:58:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 20:58:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:58:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:58:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:58:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:58:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:58:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:58:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:58:28,057 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:58:28,057 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:58:28,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:58:28 BoogieIcfgContainer [2020-10-26 20:58:28,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:58:28,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:58:28,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:58:28,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:58:28,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:58:19" (1/3) ... [2020-10-26 20:58:28,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b134dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:58:28, skipping insertion in model container [2020-10-26 20:58:28,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:58:22" (2/3) ... [2020-10-26 20:58:28,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b134dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:58:28, skipping insertion in model container [2020-10-26 20:58:28,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:58:28" (3/3) ... [2020-10-26 20:58:28,075 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label11.c [2020-10-26 20:58:28,089 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:58:28,095 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:58:28,109 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:58:28,154 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:58:28,155 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:58:28,155 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:58:28,155 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:58:28,155 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:58:28,155 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:58:28,155 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:58:28,156 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:58:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 20:58:28,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-26 20:58:28,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:58:28,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:58:28,273 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:58:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:58:28,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2016629636, now seen corresponding path program 1 times [2020-10-26 20:58:28,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:58:28,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982581005] [2020-10-26 20:58:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:58:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:33,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:33,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 796 [2020-10-26 20:58:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:58:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 20:58:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 20:58:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:58:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-26 20:58:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:58:35,586 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-26 20:58:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:58:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:58:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:58:36,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:58:36,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:58:36,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:58:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:58:36,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:58:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:58:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:58:36,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:58:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:58:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:58:41,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982581005] [2020-10-26 20:58:41,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:58:41,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-26 20:58:41,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550878331] [2020-10-26 20:58:41,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 20:58:41,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:58:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 20:58:41,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-26 20:58:41,375 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 18 states. [2020-10-26 20:58:41,647 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-26 20:58:41,885 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-26 20:58:42,102 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-26 20:58:42,388 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-26 20:58:42,892 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 20:58:43,306 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-26 20:58:46,342 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-26 20:58:46,910 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2020-10-26 20:58:49,698 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-26 20:58:50,118 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-26 20:58:51,769 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-26 20:58:56,271 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-26 20:58:56,463 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 20:59:02,427 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-26 20:59:02,637 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 20:59:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:06,193 INFO L93 Difference]: Finished difference Result 2553 states and 4911 transitions. [2020-10-26 20:59:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 20:59:06,196 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 780 [2020-10-26 20:59:06,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:06,254 INFO L225 Difference]: With dead ends: 2553 [2020-10-26 20:59:06,256 INFO L226 Difference]: Without dead ends: 1581 [2020-10-26 20:59:06,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 20:59:06,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-10-26 20:59:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2020-10-26 20:59:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-26 20:59:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2340 transitions. [2020-10-26 20:59:06,462 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2340 transitions. Word has length 780 [2020-10-26 20:59:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:06,467 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2340 transitions. [2020-10-26 20:59:06,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 20:59:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2340 transitions. [2020-10-26 20:59:06,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-26 20:59:06,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:06,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:06,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:59:06,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:06,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:06,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1001464139, now seen corresponding path program 1 times [2020-10-26 20:59:06,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:06,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927458688] [2020-10-26 20:59:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:11,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:11,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-26 20:59:11,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:59:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 20:59:11,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 20:59:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:11,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 808 [2020-10-26 20:59:11,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:12,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:12,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:12,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 20:59:12,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:12,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:12,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:59:12,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 20:59:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:59:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:59:13,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927458688] [2020-10-26 20:59:13,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:59:13,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:59:13,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218957406] [2020-10-26 20:59:13,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:59:13,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:13,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:59:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:59:13,502 INFO L87 Difference]: Start difference. First operand 1581 states and 2340 transitions. Second operand 7 states. [2020-10-26 20:59:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:25,235 INFO L93 Difference]: Finished difference Result 3285 states and 5565 transitions. [2020-10-26 20:59:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:59:25,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 799 [2020-10-26 20:59:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:25,253 INFO L225 Difference]: With dead ends: 3285 [2020-10-26 20:59:25,253 INFO L226 Difference]: Without dead ends: 2437 [2020-10-26 20:59:25,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:59:25,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-26 20:59:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2426. [2020-10-26 20:59:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2020-10-26 20:59:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3779 transitions. [2020-10-26 20:59:25,338 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3779 transitions. Word has length 799 [2020-10-26 20:59:25,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:25,340 INFO L481 AbstractCegarLoop]: Abstraction has 2426 states and 3779 transitions. [2020-10-26 20:59:25,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:59:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3779 transitions. [2020-10-26 20:59:25,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-26 20:59:25,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:25,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:25,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:59:25,353 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:25,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1170036375, now seen corresponding path program 1 times [2020-10-26 20:59:25,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:25,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336706877] [2020-10-26 20:59:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:25,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:30,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:30,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 20:59:30,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:30,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:30,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:30,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:30,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:30,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:59:30,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:30,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:30,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:30,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:30,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:30,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:59:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:59:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:30,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:30,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:59:30,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:59:30,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 20:59:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 20:59:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:59:31,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336706877] [2020-10-26 20:59:31,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:59:31,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:59:31,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025454049] [2020-10-26 20:59:31,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:59:31,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:59:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:59:31,266 INFO L87 Difference]: Start difference. First operand 2426 states and 3779 transitions. Second operand 7 states. [2020-10-26 20:59:31,406 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 20:59:33,598 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 20:59:43,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:59:43,994 INFO L93 Difference]: Finished difference Result 5049 states and 8376 transitions. [2020-10-26 20:59:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:59:43,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-26 20:59:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:59:44,014 INFO L225 Difference]: With dead ends: 5049 [2020-10-26 20:59:44,015 INFO L226 Difference]: Without dead ends: 3356 [2020-10-26 20:59:44,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:59:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2020-10-26 20:59:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3304. [2020-10-26 20:59:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3304 states. [2020-10-26 20:59:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 4790 transitions. [2020-10-26 20:59:44,135 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 4790 transitions. Word has length 807 [2020-10-26 20:59:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:59:44,136 INFO L481 AbstractCegarLoop]: Abstraction has 3304 states and 4790 transitions. [2020-10-26 20:59:44,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:59:44,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 4790 transitions. [2020-10-26 20:59:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-26 20:59:44,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:59:44,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:59:44,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:59:44,152 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:59:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:59:44,153 INFO L82 PathProgramCache]: Analyzing trace with hash 512697388, now seen corresponding path program 1 times [2020-10-26 20:59:44,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:59:44,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850694411] [2020-10-26 20:59:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:59:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:44,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:49,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:49,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-26 20:59:49,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:59:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 20:59:49,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:59:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:59:49,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 20:59:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 20:59:49,579 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 20:59:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:59:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:49,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:49,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:59:49,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 20:59:49,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:59:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:59:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:59:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:49,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:59:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:49,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:59:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:59:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 20:59:49,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:59:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:59:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:59:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:59:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:59:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 20:59:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:59:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 20:59:49,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:59:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:59:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:59:49,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:59:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:59:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 20:59:50,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850694411] [2020-10-26 20:59:50,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:59:50,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:59:50,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601529515] [2020-10-26 20:59:50,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:59:50,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:59:50,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:59:50,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:59:50,224 INFO L87 Difference]: Start difference. First operand 3304 states and 4790 transitions. Second operand 8 states. [2020-10-26 20:59:59,956 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:00:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:04,268 INFO L93 Difference]: Finished difference Result 8628 states and 13347 transitions. [2020-10-26 21:00:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:00:04,270 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 814 [2020-10-26 21:00:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:04,303 INFO L225 Difference]: With dead ends: 8628 [2020-10-26 21:00:04,303 INFO L226 Difference]: Without dead ends: 6057 [2020-10-26 21:00:04,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:00:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6057 states. [2020-10-26 21:00:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6057 to 5970. [2020-10-26 21:00:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5970 states. [2020-10-26 21:00:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5970 states to 5970 states and 8637 transitions. [2020-10-26 21:00:04,504 INFO L78 Accepts]: Start accepts. Automaton has 5970 states and 8637 transitions. Word has length 814 [2020-10-26 21:00:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:04,504 INFO L481 AbstractCegarLoop]: Abstraction has 5970 states and 8637 transitions. [2020-10-26 21:00:04,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:00:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5970 states and 8637 transitions. [2020-10-26 21:00:04,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2020-10-26 21:00:04,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:04,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:04,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:00:04,528 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:04,529 INFO L82 PathProgramCache]: Analyzing trace with hash -348847096, now seen corresponding path program 1 times [2020-10-26 21:00:04,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:04,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783968716] [2020-10-26 21:00:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3463 [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:00:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 784 [2020-10-26 21:00:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:08,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:08,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:00:08,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:00:08,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:00:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:00:08,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:08,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:00:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:08,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:00:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 21:00:09,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783968716] [2020-10-26 21:00:09,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:09,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:00:09,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132185401] [2020-10-26 21:00:09,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:00:09,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:09,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:00:09,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:00:09,538 INFO L87 Difference]: Start difference. First operand 5970 states and 8637 transitions. Second operand 6 states. [2020-10-26 21:00:21,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:21,713 INFO L93 Difference]: Finished difference Result 16414 states and 24929 transitions. [2020-10-26 21:00:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:00:21,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 816 [2020-10-26 21:00:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:21,765 INFO L225 Difference]: With dead ends: 16414 [2020-10-26 21:00:21,765 INFO L226 Difference]: Without dead ends: 11177 [2020-10-26 21:00:21,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:00:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2020-10-26 21:00:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 11166. [2020-10-26 21:00:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11166 states. [2020-10-26 21:00:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11166 states to 11166 states and 15299 transitions. [2020-10-26 21:00:22,080 INFO L78 Accepts]: Start accepts. Automaton has 11166 states and 15299 transitions. Word has length 816 [2020-10-26 21:00:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:22,082 INFO L481 AbstractCegarLoop]: Abstraction has 11166 states and 15299 transitions. [2020-10-26 21:00:22,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:00:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 11166 states and 15299 transitions. [2020-10-26 21:00:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-26 21:00:22,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:22,122 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:22,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:00:22,123 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1887683809, now seen corresponding path program 1 times [2020-10-26 21:00:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:22,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557707162] [2020-10-26 21:00:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:22,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:27,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:27,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-26 21:00:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:00:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 21:00:27,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:00:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-26 21:00:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:00:27,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:27,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:00:27,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:00:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:27,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:27,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:00:27,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:00:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:00:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:00:27,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557707162] [2020-10-26 21:00:27,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:27,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:00:27,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167365449] [2020-10-26 21:00:27,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:00:27,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:27,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:00:27,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:00:27,996 INFO L87 Difference]: Start difference. First operand 11166 states and 15299 transitions. Second operand 8 states. [2020-10-26 21:00:37,038 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:00:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:00:43,448 INFO L93 Difference]: Finished difference Result 27192 states and 40041 transitions. [2020-10-26 21:00:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:00:43,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 821 [2020-10-26 21:00:43,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:00:43,520 INFO L225 Difference]: With dead ends: 27192 [2020-10-26 21:00:43,520 INFO L226 Difference]: Without dead ends: 16759 [2020-10-26 21:00:43,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:00:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2020-10-26 21:00:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 16619. [2020-10-26 21:00:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16619 states. [2020-10-26 21:00:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16619 states to 16619 states and 23657 transitions. [2020-10-26 21:00:43,979 INFO L78 Accepts]: Start accepts. Automaton has 16619 states and 23657 transitions. Word has length 821 [2020-10-26 21:00:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:00:43,980 INFO L481 AbstractCegarLoop]: Abstraction has 16619 states and 23657 transitions. [2020-10-26 21:00:43,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:00:43,980 INFO L276 IsEmpty]: Start isEmpty. Operand 16619 states and 23657 transitions. [2020-10-26 21:00:44,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2020-10-26 21:00:44,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:00:44,039 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:00:44,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:00:44,040 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:00:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:00:44,041 INFO L82 PathProgramCache]: Analyzing trace with hash -820645530, now seen corresponding path program 1 times [2020-10-26 21:00:44,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:00:44,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435572722] [2020-10-26 21:00:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:00:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:49,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 896 [2020-10-26 21:00:49,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:00:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 21:00:49,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:00:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:00:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 21:00:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:49,427 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:00:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:00:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:49,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:00:49,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:49,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:00:49,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:00:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:00:49,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:00:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:49,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:00:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:49,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:00:49,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:00:49,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 21:00:49,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:49,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:00:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:00:49,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:00:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:49,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:00:49,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:00:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:00:49,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:00:49,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:00:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:00:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:00:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:00:49,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:00:49,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 21:00:49,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:00:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 21:00:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:00:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:00:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:00:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 21:00:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:00:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 111 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-26 21:00:50,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435572722] [2020-10-26 21:00:50,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:00:50,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:00:50,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297268860] [2020-10-26 21:00:50,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:00:50,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:00:50,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:00:50,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:00:50,310 INFO L87 Difference]: Start difference. First operand 16619 states and 23657 transitions. Second operand 8 states. [2020-10-26 21:00:50,450 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:01:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:05,318 INFO L93 Difference]: Finished difference Result 43372 states and 66682 transitions. [2020-10-26 21:01:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:01:05,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 874 [2020-10-26 21:01:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:05,440 INFO L225 Difference]: With dead ends: 43372 [2020-10-26 21:01:05,440 INFO L226 Difference]: Without dead ends: 27486 [2020-10-26 21:01:05,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:01:05,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27486 states. [2020-10-26 21:01:06,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27486 to 27213. [2020-10-26 21:01:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27213 states. [2020-10-26 21:01:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27213 states to 27213 states and 38212 transitions. [2020-10-26 21:01:06,304 INFO L78 Accepts]: Start accepts. Automaton has 27213 states and 38212 transitions. Word has length 874 [2020-10-26 21:01:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:01:06,305 INFO L481 AbstractCegarLoop]: Abstraction has 27213 states and 38212 transitions. [2020-10-26 21:01:06,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:01:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 27213 states and 38212 transitions. [2020-10-26 21:01:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-26 21:01:06,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:01:06,384 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:01:06,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:01:06,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:01:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:01:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash -114472586, now seen corresponding path program 1 times [2020-10-26 21:01:06,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:01:06,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067614922] [2020-10-26 21:01:06,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:01:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:11,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:11,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-26 21:01:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:01:11,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-26 21:01:11,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:01:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:01:11,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 21:01:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:11,877 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:01:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:01:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:11,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:11,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:01:11,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:11,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:01:11,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:01:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:11,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:01:11,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:01:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:11,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:12,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:12,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:01:12,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 21:01:12,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:12,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:01:12,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:01:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:12,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:12,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:01:12,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:01:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-26 21:01:12,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:12,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 21:01:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:12,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 21:01:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 206 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-26 21:01:13,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067614922] [2020-10-26 21:01:13,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:01:13,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:01:13,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118957958] [2020-10-26 21:01:13,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:01:13,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:01:13,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:01:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:01:13,566 INFO L87 Difference]: Start difference. First operand 27213 states and 38212 transitions. Second operand 8 states. [2020-10-26 21:01:13,698 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:01:17,308 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:01:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:27,255 INFO L93 Difference]: Finished difference Result 58932 states and 85055 transitions. [2020-10-26 21:01:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:01:27,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 930 [2020-10-26 21:01:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:27,365 INFO L225 Difference]: With dead ends: 58932 [2020-10-26 21:01:27,365 INFO L226 Difference]: Without dead ends: 32452 [2020-10-26 21:01:27,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:01:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32452 states. [2020-10-26 21:01:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32452 to 32445. [2020-10-26 21:01:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32445 states. [2020-10-26 21:01:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32445 states to 32445 states and 45655 transitions. [2020-10-26 21:01:28,219 INFO L78 Accepts]: Start accepts. Automaton has 32445 states and 45655 transitions. Word has length 930 [2020-10-26 21:01:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:01:28,219 INFO L481 AbstractCegarLoop]: Abstraction has 32445 states and 45655 transitions. [2020-10-26 21:01:28,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:01:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 32445 states and 45655 transitions. [2020-10-26 21:01:28,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-26 21:01:28,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:01:28,289 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:01:28,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:01:28,289 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:01:28,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:01:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash -200835166, now seen corresponding path program 1 times [2020-10-26 21:01:28,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:01:28,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726188928] [2020-10-26 21:01:28,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:01:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:28,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:29,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:33,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 978 [2020-10-26 21:01:33,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:01:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-26 21:01:33,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:01:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:01:33,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 21:01:33,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:33,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:01:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:33,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:01:33,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:33,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:01:33,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:33,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:01:33,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:01:33,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:01:33,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:01:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:33,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:33,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:01:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:01:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:33,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:33,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:01:33,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:01:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 21:01:33,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:01:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:33,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-26 21:01:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:01:33,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:01:34,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 21:01:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:01:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 169 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-26 21:01:34,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726188928] [2020-10-26 21:01:34,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:01:34,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:01:34,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103749064] [2020-10-26 21:01:34,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:01:34,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:01:34,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:01:34,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:01:34,750 INFO L87 Difference]: Start difference. First operand 32445 states and 45655 transitions. Second operand 7 states. [2020-10-26 21:01:34,901 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:01:39,149 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:01:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:01:51,436 INFO L93 Difference]: Finished difference Result 92929 states and 135197 transitions. [2020-10-26 21:01:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:01:51,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 956 [2020-10-26 21:01:51,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:01:51,615 INFO L225 Difference]: With dead ends: 92929 [2020-10-26 21:01:51,616 INFO L226 Difference]: Without dead ends: 61217 [2020-10-26 21:01:51,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:01:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61217 states.