/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:21:48,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:21:48,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:21:48,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:21:48,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:21:48,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:21:48,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:21:48,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:21:48,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:21:48,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:21:48,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:21:48,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:21:48,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:21:48,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:21:48,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:21:48,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:21:48,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:21:48,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:21:48,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:21:48,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:21:48,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:21:48,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:21:48,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:21:48,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:21:48,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:21:48,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:21:48,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:21:48,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:21:48,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:21:48,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:21:48,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:21:48,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:21:48,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:21:48,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:21:48,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:21:48,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:21:48,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:21:48,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:21:48,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:21:48,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:21:48,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:21:48,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:21:48,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:21:48,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:21:48,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:21:48,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:21:48,533 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:21:48,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:21:48,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:21:48,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:21:48,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:21:48,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:21:48,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:21:48,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:21:48,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:21:48,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:21:48,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:21:48,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:21:48,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:21:48,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:21:48,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:21:48,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:21:48,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:21:48,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:21:48,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:21:48,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:21:48,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:21:48,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:21:48,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:21:48,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:21:48,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:21:48,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:21:48,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:21:48,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:21:48,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:21:48,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:21:48,977 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:21:48,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label46.c [2020-10-29 07:21:49,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8186e89/4c51552e04eb44dca85ce5e4bc3a492a/FLAG68870e06a [2020-10-29 07:21:50,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:21:50,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label46.c [2020-10-29 07:21:50,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8186e89/4c51552e04eb44dca85ce5e4bc3a492a/FLAG68870e06a [2020-10-29 07:21:50,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df8186e89/4c51552e04eb44dca85ce5e4bc3a492a [2020-10-29 07:21:50,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:21:50,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:21:50,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:21:50,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:21:50,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:21:50,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:21:50" (1/1) ... [2020-10-29 07:21:50,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:50, skipping insertion in model container [2020-10-29 07:21:50,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:21:50" (1/1) ... [2020-10-29 07:21:50,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:21:51,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:21:52,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:21:52,835 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:21:53,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:21:53,955 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:21:53,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53 WrapperNode [2020-10-29 07:21:53,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:21:53,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:21:53,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:21:53,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:21:53,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:53,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:54,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:54,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:54,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:54,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:54,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... [2020-10-29 07:21:54,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:21:54,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:21:54,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:21:54,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:21:54,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:21:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:21:54,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:21:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:21:54,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:21:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:21:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:21:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:21:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:21:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:21:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:21:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:21:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:21:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:21:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:21:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:21:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:21:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:21:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:21:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:22:07,004 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:22:07,005 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:22:07,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:07 BoogieIcfgContainer [2020-10-29 07:22:07,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:22:07,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:22:07,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:22:07,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:22:07,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:21:50" (1/3) ... [2020-10-29 07:22:07,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615f31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:07, skipping insertion in model container [2020-10-29 07:22:07,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:21:53" (2/3) ... [2020-10-29 07:22:07,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615f31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:22:07, skipping insertion in model container [2020-10-29 07:22:07,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:22:07" (3/3) ... [2020-10-29 07:22:07,029 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label46.c [2020-10-29 07:22:07,049 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:22:07,058 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:22:07,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:22:07,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:22:07,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:22:07,124 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:22:07,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:22:07,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:22:07,125 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:22:07,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:22:07,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:22:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:22:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 07:22:07,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:07,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:07,190 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:07,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash -726439558, now seen corresponding path program 1 times [2020-10-29 07:22:07,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:07,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165123000] [2020-10-29 07:22:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:08,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:08,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:22:08,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:08,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-29 07:22:08,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:08,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:22:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:22:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:22:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:08,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:08,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:08,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165123000] [2020-10-29 07:22:08,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:08,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:22:08,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783905551] [2020-10-29 07:22:08,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:22:08,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:08,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:22:08,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:22:08,776 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:22:36,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:36,087 INFO L93 Difference]: Finished difference Result 3975 states and 7420 transitions. [2020-10-29 07:22:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:22:36,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 07:22:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:36,148 INFO L225 Difference]: With dead ends: 3975 [2020-10-29 07:22:36,149 INFO L226 Difference]: Without dead ends: 2784 [2020-10-29 07:22:36,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:22:36,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-10-29 07:22:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2759. [2020-10-29 07:22:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-29 07:22:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 4414 transitions. [2020-10-29 07:22:36,485 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 4414 transitions. Word has length 73 [2020-10-29 07:22:36,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:36,487 INFO L481 AbstractCegarLoop]: Abstraction has 2759 states and 4414 transitions. [2020-10-29 07:22:36,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:22:36,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 4414 transitions. [2020-10-29 07:22:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 07:22:36,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:36,496 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:36,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:22:36,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:36,497 INFO L82 PathProgramCache]: Analyzing trace with hash -790043421, now seen corresponding path program 1 times [2020-10-29 07:22:36,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:36,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883083350] [2020-10-29 07:22:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:39,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:39,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-29 07:22:39,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:22:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3079 [2020-10-29 07:22:39,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:39,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:39,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:39,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 07:22:39,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:22:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:22:39,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:39,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:39,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:22:39,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:39,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:39,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:22:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:22:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 07:22:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:40,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:40,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:40,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:22:40,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:40,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 07:22:40,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:40,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:22:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:22:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:40,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883083350] [2020-10-29 07:22:40,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:22:40,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:22:40,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986987552] [2020-10-29 07:22:40,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:22:40,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:40,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:22:40,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:22:40,340 INFO L87 Difference]: Start difference. First operand 2759 states and 4414 transitions. Second operand 6 states. [2020-10-29 07:23:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:09,186 INFO L93 Difference]: Finished difference Result 10546 states and 17272 transitions. [2020-10-29 07:23:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:23:09,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2020-10-29 07:23:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:09,254 INFO L225 Difference]: With dead ends: 10546 [2020-10-29 07:23:09,254 INFO L226 Difference]: Without dead ends: 7793 [2020-10-29 07:23:09,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:23:09,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7793 states. [2020-10-29 07:23:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7793 to 7768. [2020-10-29 07:23:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7768 states. [2020-10-29 07:23:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7768 states to 7768 states and 11296 transitions. [2020-10-29 07:23:09,624 INFO L78 Accepts]: Start accepts. Automaton has 7768 states and 11296 transitions. Word has length 163 [2020-10-29 07:23:09,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:09,625 INFO L481 AbstractCegarLoop]: Abstraction has 7768 states and 11296 transitions. [2020-10-29 07:23:09,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:23:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7768 states and 11296 transitions. [2020-10-29 07:23:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 07:23:09,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:09,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:23:09,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:23:09,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:09,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1187920751, now seen corresponding path program 1 times [2020-10-29 07:23:09,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:09,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838616295] [2020-10-29 07:23:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:14,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:14,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 07:23:14,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:23:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 07:23:14,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:14,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-29 07:23:14,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:23:14,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:14,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:14,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:14,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:14,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:14,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:23:14,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:14,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:14,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:14,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:14,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:14,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:23:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:23:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:15,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:23:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-29 07:23:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:15,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:15,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:23:15,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:15,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-29 07:23:15,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:15,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:15,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:23:15,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:23:15,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838616295] [2020-10-29 07:23:15,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:15,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:15,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947870920] [2020-10-29 07:23:15,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:15,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:15,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:15,591 INFO L87 Difference]: Start difference. First operand 7768 states and 11296 transitions. Second operand 7 states. [2020-10-29 07:23:54,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:54,825 INFO L93 Difference]: Finished difference Result 30759 states and 47111 transitions. [2020-10-29 07:23:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:54,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-29 07:23:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:54,972 INFO L225 Difference]: With dead ends: 30759 [2020-10-29 07:23:54,972 INFO L226 Difference]: Without dead ends: 22997 [2020-10-29 07:23:55,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22997 states. [2020-10-29 07:23:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22997 to 22908. [2020-10-29 07:23:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22908 states. [2020-10-29 07:23:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22908 states to 22908 states and 31543 transitions. [2020-10-29 07:23:55,764 INFO L78 Accepts]: Start accepts. Automaton has 22908 states and 31543 transitions. Word has length 238 [2020-10-29 07:23:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:55,766 INFO L481 AbstractCegarLoop]: Abstraction has 22908 states and 31543 transitions. [2020-10-29 07:23:55,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 22908 states and 31543 transitions. [2020-10-29 07:23:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 07:23:55,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:55,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:23:55,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:23:55,781 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash -816162858, now seen corresponding path program 1 times [2020-10-29 07:23:55,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:55,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197777916] [2020-10-29 07:23:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:00,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:00,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-29 07:24:00,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:24:00,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 07:24:00,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:00,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:00,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:24:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:24:00,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 07:24:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:01,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:01,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:01,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:24:01,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:01,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:24:01,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:01,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:01,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:24:01,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 07:24:01,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:01,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:24:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:24:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:01,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:24:01,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:24:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:01,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:24:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:01,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:24:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 131 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:24:01,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197777916] [2020-10-29 07:24:01,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:01,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:24:01,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967165515] [2020-10-29 07:24:01,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:24:01,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:01,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:24:01,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:24:01,913 INFO L87 Difference]: Start difference. First operand 22908 states and 31543 transitions. Second operand 8 states. [2020-10-29 07:24:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:30,764 INFO L93 Difference]: Finished difference Result 45362 states and 65703 transitions. [2020-10-29 07:24:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:24:30,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2020-10-29 07:24:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:30,924 INFO L225 Difference]: With dead ends: 45362 [2020-10-29 07:24:30,924 INFO L226 Difference]: Without dead ends: 22460 [2020-10-29 07:24:31,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:24:31,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22460 states. [2020-10-29 07:24:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22460 to 22120. [2020-10-29 07:24:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22120 states. [2020-10-29 07:24:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22120 states to 22120 states and 28598 transitions. [2020-10-29 07:24:31,806 INFO L78 Accepts]: Start accepts. Automaton has 22120 states and 28598 transitions. Word has length 241 [2020-10-29 07:24:31,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:31,806 INFO L481 AbstractCegarLoop]: Abstraction has 22120 states and 28598 transitions. [2020-10-29 07:24:31,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:24:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22120 states and 28598 transitions. [2020-10-29 07:24:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-29 07:24:31,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:31,818 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:24:31,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:24:31,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:31,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:31,819 INFO L82 PathProgramCache]: Analyzing trace with hash -925456549, now seen corresponding path program 1 times [2020-10-29 07:24:31,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:31,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923423874] [2020-10-29 07:24:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:33,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:34,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:34,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-29 07:24:34,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:24:34,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2171 [2020-10-29 07:24:34,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:34,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:34,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:24:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 07:24:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:34,264 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:24:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:34,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:34,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:34,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:24:34,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:34,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:24:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:34,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:34,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:34,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:24:34,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:34,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 07:24:34,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:34,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:34,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:24:34,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:24:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:34,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 07:24:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 07:24:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:34,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:24:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 07:24:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 07:24:35,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923423874] [2020-10-29 07:24:35,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:24:35,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:24:35,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824441609] [2020-10-29 07:24:35,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:24:35,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:24:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:24:35,104 INFO L87 Difference]: Start difference. First operand 22120 states and 28598 transitions. Second operand 6 states. [2020-10-29 07:24:35,253 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:24:51,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:51,520 INFO L93 Difference]: Finished difference Result 37697 states and 49574 transitions. [2020-10-29 07:24:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:24:51,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2020-10-29 07:24:51,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:51,603 INFO L225 Difference]: With dead ends: 37697 [2020-10-29 07:24:51,604 INFO L226 Difference]: Without dead ends: 22100 [2020-10-29 07:24:51,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:24:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22100 states. [2020-10-29 07:24:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22100 to 22094. [2020-10-29 07:24:52,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22094 states. [2020-10-29 07:24:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22094 states to 22094 states and 28549 transitions. [2020-10-29 07:24:52,242 INFO L78 Accepts]: Start accepts. Automaton has 22094 states and 28549 transitions. Word has length 292 [2020-10-29 07:24:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:24:52,243 INFO L481 AbstractCegarLoop]: Abstraction has 22094 states and 28549 transitions. [2020-10-29 07:24:52,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:24:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 22094 states and 28549 transitions. [2020-10-29 07:24:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 07:24:52,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:24:52,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:24:52,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:24:52,257 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:24:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:24:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2079970847, now seen corresponding path program 1 times [2020-10-29 07:24:52,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:24:52,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925717319] [2020-10-29 07:24:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:24:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:52,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:55,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:57,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:57,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-29 07:24:57,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:24:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 07:24:57,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:57,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:24:57,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:24:57,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 07:24:57,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:57,709 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-10-29 07:24:57,848 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:24:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:24:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:57,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:57,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:24:57,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:57,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:24:57,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:57,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:24:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:24:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:24:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:57,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:58,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:24:58,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:24:58,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:58,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:58,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:24:58,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:24:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:58,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:58,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:24:58,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:24:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 07:24:58,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:58,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:58,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:24:58,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:24:58,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 07:24:58,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:24:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-29 07:24:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:24:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:24:58,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:24:58,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:24:58,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:24:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 07:24:58,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:24:58,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:24:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:24:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:24:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:24:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:24:58,851 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-10-29 07:24:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 303 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 07:24:59,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925717319] [2020-10-29 07:24:59,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:24:59,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:24:59,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434360984] [2020-10-29 07:24:59,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:24:59,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:24:59,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:24:59,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:24:59,203 INFO L87 Difference]: Start difference. First operand 22094 states and 28549 transitions. Second operand 8 states. [2020-10-29 07:25:00,402 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:25:04,167 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-10-29 07:25:04,945 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80