/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:58:35,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:58:35,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:58:35,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:58:35,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:58:35,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:58:35,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:58:35,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:58:35,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:58:35,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:58:35,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:58:35,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:58:35,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:58:35,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:58:35,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:58:35,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:58:35,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:58:35,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:58:35,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:58:35,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:58:35,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:58:35,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:58:35,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:58:35,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:58:35,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:58:35,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:58:35,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:58:35,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:58:35,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:58:35,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:58:35,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:58:35,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:58:35,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:58:35,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:58:35,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:58:35,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:58:35,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:58:35,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:58:35,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:58:35,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:58:35,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:58:35,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:58:35,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:58:35,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:58:35,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:58:35,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:58:35,566 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:58:35,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:58:35,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:58:35,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:58:35,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:58:35,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:58:35,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:58:35,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:58:35,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:58:35,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:58:35,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:58:35,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:58:35,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:58:35,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:58:35,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:58:35,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:58:35,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:58:35,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:58:35,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:58:35,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:58:35,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:58:35,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:58:35,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:58:35,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:58:35,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:58:35,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:58:35,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:58:36,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:58:36,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:58:36,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:58:36,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:58:36,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2020-10-28 13:58:36,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5ccd0c9/d6f952cd034f45f6bf6795449a3ed6d5/FLAG0b06108b5 [2020-10-28 13:58:37,152 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:58:37,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2020-10-28 13:58:37,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5ccd0c9/d6f952cd034f45f6bf6795449a3ed6d5/FLAG0b06108b5 [2020-10-28 13:58:37,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d5ccd0c9/d6f952cd034f45f6bf6795449a3ed6d5 [2020-10-28 13:58:37,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:58:37,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:58:37,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:58:37,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:58:37,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:58:37,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:58:37" (1/1) ... [2020-10-28 13:58:37,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:37, skipping insertion in model container [2020-10-28 13:58:37,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:58:37" (1/1) ... [2020-10-28 13:58:37,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:58:37,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:58:39,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:58:39,027 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:58:39,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:58:39,569 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:58:39,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39 WrapperNode [2020-10-28 13:58:39,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:58:39,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:58:39,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:58:39,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:58:39,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... [2020-10-28 13:58:39,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:58:39,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:58:39,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:58:39,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:58:39,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:58:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:58:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:58:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:58:39,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:58:39,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:58:39,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:58:39,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:58:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:58:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:58:39,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:58:39,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:58:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:58:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:58:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:58:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:58:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:58:39,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:58:44,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:58:44,147 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:58:44,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:58:44 BoogieIcfgContainer [2020-10-28 13:58:44,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:58:44,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:58:44,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:58:44,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:58:44,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:58:37" (1/3) ... [2020-10-28 13:58:44,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1753119d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:58:44, skipping insertion in model container [2020-10-28 13:58:44,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:58:39" (2/3) ... [2020-10-28 13:58:44,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1753119d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:58:44, skipping insertion in model container [2020-10-28 13:58:44,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:58:44" (3/3) ... [2020-10-28 13:58:44,169 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label48.c [2020-10-28 13:58:44,183 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:58:44,190 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:58:44,205 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:58:44,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:58:44,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:58:44,259 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:58:44,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:58:44,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:58:44,260 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:58:44,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:58:44,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:58:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:58:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 13:58:44,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:44,320 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] [2020-10-28 13:58:44,321 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:44,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1487272208, now seen corresponding path program 1 times [2020-10-28 13:58:44,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:44,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194026767] [2020-10-28 13:58:44,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:58:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-28 13:58:45,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:58:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:58:45,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 13:58:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:58:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:58:45,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:45,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:58:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:58:45,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:58:45,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194026767] [2020-10-28 13:58:45,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:58:45,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:58:45,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958622150] [2020-10-28 13:58:45,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:58:45,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:45,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:58:45,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:58:45,480 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:59:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:00,268 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-28 13:59:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:59:00,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-28 13:59:00,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:00,317 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:59:00,318 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:59:00,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:59:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:59:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:59:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-28 13:59:00,554 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 61 [2020-10-28 13:59:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:00,555 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-28 13:59:00,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:59:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-28 13:59:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 13:59:00,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:00,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:59:00,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:59:00,564 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1312653107, now seen corresponding path program 1 times [2020-10-28 13:59:00,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:00,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129414249] [2020-10-28 13:59:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:00,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:02,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:02,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 13:59:02,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1769 [2020-10-28 13:59:02,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:02,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:02,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:59:02,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:59:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:59:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:02,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:59:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:02,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:02,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:59:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:59:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:02,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:02,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:59:02,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-28 13:59:02,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:02,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:59:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:59:03,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129414249] [2020-10-28 13:59:03,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:59:03,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:59:03,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333186951] [2020-10-28 13:59:03,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:03,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:03,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:03,030 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-28 13:59:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:14,928 INFO L93 Difference]: Finished difference Result 6511 states and 10972 transitions. [2020-10-28 13:59:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:59:14,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 13:59:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:14,963 INFO L225 Difference]: With dead ends: 6511 [2020-10-28 13:59:14,964 INFO L226 Difference]: Without dead ends: 4381 [2020-10-28 13:59:14,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:59:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-28 13:59:15,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 3598. [2020-10-28 13:59:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3598 states. [2020-10-28 13:59:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5300 transitions. [2020-10-28 13:59:15,115 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5300 transitions. Word has length 149 [2020-10-28 13:59:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:15,116 INFO L481 AbstractCegarLoop]: Abstraction has 3598 states and 5300 transitions. [2020-10-28 13:59:15,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5300 transitions. [2020-10-28 13:59:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 13:59:15,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:15,121 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, 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] [2020-10-28 13:59:15,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:59:15,122 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1332254642, now seen corresponding path program 1 times [2020-10-28 13:59:15,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:15,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224162634] [2020-10-28 13:59:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:15,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:18,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:20,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:20,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-28 13:59:20,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:59:20,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:59:20,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:20,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:59:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:59:20,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:20,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:20,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:20,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:20,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:20,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:59:20,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:20,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:20,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:20,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:20,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:20,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:59:20,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:20,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:59:20,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:20,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:20,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:20,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:59:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:20,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:59:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:20,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:20,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:59:20,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:59:20,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:20,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:20,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:59:20,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:59:20,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224162634] [2020-10-28 13:59:20,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:20,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:59:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280716474] [2020-10-28 13:59:20,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:59:20,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:20,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:59:20,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:59:20,877 INFO L87 Difference]: Start difference. First operand 3598 states and 5300 transitions. Second operand 7 states. [2020-10-28 13:59:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:33,431 INFO L93 Difference]: Finished difference Result 9364 states and 14373 transitions. [2020-10-28 13:59:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:59:33,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-28 13:59:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:33,468 INFO L225 Difference]: With dead ends: 9364 [2020-10-28 13:59:33,468 INFO L226 Difference]: Without dead ends: 5772 [2020-10-28 13:59:33,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:59:33,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5772 states. [2020-10-28 13:59:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5772 to 5761. [2020-10-28 13:59:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5761 states. [2020-10-28 13:59:33,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8241 transitions. [2020-10-28 13:59:33,651 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8241 transitions. Word has length 220 [2020-10-28 13:59:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:33,652 INFO L481 AbstractCegarLoop]: Abstraction has 5761 states and 8241 transitions. [2020-10-28 13:59:33,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:59:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8241 transitions. [2020-10-28 13:59:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-28 13:59:33,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:33,658 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, 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] [2020-10-28 13:59:33,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:59:33,658 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:33,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1651336240, now seen corresponding path program 1 times [2020-10-28 13:59:33,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:33,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000875053] [2020-10-28 13:59:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:33,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:38,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:38,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-28 13:59:38,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:59:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:59:38,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:38,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:38,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:59:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:59:38,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-28 13:59:38,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:38,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:59:38,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:38,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:38,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:38,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:38,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:39,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:59:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:39,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:59:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:39,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:59:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:59:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:39,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:39,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:59:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:39,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 13:59:39,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:39,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:39,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:59:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 119 proven. 53 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:59:39,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000875053] [2020-10-28 13:59:39,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:39,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:59:39,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876301745] [2020-10-28 13:59:39,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:59:39,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:39,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:59:39,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:59:39,577 INFO L87 Difference]: Start difference. First operand 5761 states and 8241 transitions. Second operand 6 states. [2020-10-28 13:59:54,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:59:54,917 INFO L93 Difference]: Finished difference Result 16674 states and 24597 transitions. [2020-10-28 13:59:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:59:54,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 267 [2020-10-28 13:59:54,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:59:54,978 INFO L225 Difference]: With dead ends: 16674 [2020-10-28 13:59:54,979 INFO L226 Difference]: Without dead ends: 10919 [2020-10-28 13:59:54,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:59:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10919 states. [2020-10-28 13:59:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10919 to 10169. [2020-10-28 13:59:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10169 states. [2020-10-28 13:59:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10169 states to 10169 states and 13711 transitions. [2020-10-28 13:59:55,300 INFO L78 Accepts]: Start accepts. Automaton has 10169 states and 13711 transitions. Word has length 267 [2020-10-28 13:59:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:59:55,302 INFO L481 AbstractCegarLoop]: Abstraction has 10169 states and 13711 transitions. [2020-10-28 13:59:55,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:59:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10169 states and 13711 transitions. [2020-10-28 13:59:55,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 13:59:55,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:59:55,310 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, 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] [2020-10-28 13:59:55,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:59:55,310 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:59:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:59:55,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2019354860, now seen corresponding path program 1 times [2020-10-28 13:59:55,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:59:55,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880362068] [2020-10-28 13:59:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:59:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 13:59:58,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:59:58,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3475 [2020-10-28 13:59:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:58,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:59:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 13:59:58,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:59:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:59:58,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:59:58,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:58,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:59:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:59:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:59:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:59:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:59:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:59:59,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:59,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:59:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:59:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:59:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 13:59:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:59:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:59:59,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:59:59,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 13:59:59,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:59:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-28 13:59:59,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:59:59,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:59:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:59:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:59:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:59:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:59:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:59:59,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880362068] [2020-10-28 13:59:59,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:59:59,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:59:59,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064618693] [2020-10-28 13:59:59,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:59:59,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:59:59,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:59:59,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:59:59,754 INFO L87 Difference]: Start difference. First operand 10169 states and 13711 transitions. Second operand 8 states. [2020-10-28 14:00:22,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:22,018 INFO L93 Difference]: Finished difference Result 22052 states and 30059 transitions. [2020-10-28 14:00:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 14:00:22,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-10-28 14:00:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:22,077 INFO L225 Difference]: With dead ends: 22052 [2020-10-28 14:00:22,077 INFO L226 Difference]: Without dead ends: 11103 [2020-10-28 14:00:22,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:00:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2020-10-28 14:00:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 10878. [2020-10-28 14:00:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10878 states. [2020-10-28 14:00:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10878 states to 10878 states and 13618 transitions. [2020-10-28 14:00:22,500 INFO L78 Accepts]: Start accepts. Automaton has 10878 states and 13618 transitions. Word has length 269 [2020-10-28 14:00:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:22,501 INFO L481 AbstractCegarLoop]: Abstraction has 10878 states and 13618 transitions. [2020-10-28 14:00:22,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:00:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 10878 states and 13618 transitions. [2020-10-28 14:00:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 14:00:22,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:22,509 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, 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] [2020-10-28 14:00:22,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:00:22,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:22,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2035977516, now seen corresponding path program 1 times [2020-10-28 14:00:22,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:22,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905726952] [2020-10-28 14:00:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:26,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 14:00:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:00:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4052 [2020-10-28 14:00:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:26,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 14:00:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:00:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:26,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:26,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:26,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:26,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:26,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:26,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:26,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:26,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:26,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:26,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:00:26,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:26,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 14:00:26,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:26,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:26,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:26,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:26,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 14:00:26,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 14:00:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:27,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:27,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 14:00:27,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:27,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 14:00:27,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:27,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 14:00:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:00:27,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905726952] [2020-10-28 14:00:27,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:27,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:27,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631145744] [2020-10-28 14:00:27,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:27,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:27,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:27,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:27,216 INFO L87 Difference]: Start difference. First operand 10878 states and 13618 transitions. Second operand 7 states. [2020-10-28 14:00:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:39,900 INFO L93 Difference]: Finished difference Result 23506 states and 30202 transitions. [2020-10-28 14:00:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:00:39,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-28 14:00:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:39,950 INFO L225 Difference]: With dead ends: 23506 [2020-10-28 14:00:39,950 INFO L226 Difference]: Without dead ends: 11104 [2020-10-28 14:00:39,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:00:39,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11104 states. [2020-10-28 14:00:40,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11104 to 10900. [2020-10-28 14:00:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10900 states. [2020-10-28 14:00:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10900 states to 10900 states and 12370 transitions. [2020-10-28 14:00:40,256 INFO L78 Accepts]: Start accepts. Automaton has 10900 states and 12370 transitions. Word has length 285 [2020-10-28 14:00:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:40,257 INFO L481 AbstractCegarLoop]: Abstraction has 10900 states and 12370 transitions. [2020-10-28 14:00:40,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 10900 states and 12370 transitions. [2020-10-28 14:00:40,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-28 14:00:40,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:40,267 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:40,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:00:40,267 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:40,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:40,268 INFO L82 PathProgramCache]: Analyzing trace with hash -494781197, now seen corresponding path program 1 times [2020-10-28 14:00:40,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:40,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228063590] [2020-10-28 14:00:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:45,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:45,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-28 14:00:45,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:00:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 14:00:45,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:45,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:00:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 14:00:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:00:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:00:45,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:45,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:00:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:45,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:45,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:00:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:45,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:45,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:00:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 14:00:45,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:45,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:00:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:00:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:00:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:00:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:00:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:45,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:45,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 14:00:45,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 14:00:45,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:45,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:00:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:00:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:00:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:45,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-28 14:00:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:45,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:00:45,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:00:45,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:00:45,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:00:45,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:00:45,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:00:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:00:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 14:00:45,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:00:45,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:00:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 231 proven. 87 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 14:00:46,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228063590] [2020-10-28 14:00:46,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:00:46,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:00:46,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716127540] [2020-10-28 14:00:46,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:00:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:00:46,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:00:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:00:46,122 INFO L87 Difference]: Start difference. First operand 10900 states and 12370 transitions. Second operand 7 states. [2020-10-28 14:00:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:00:57,260 INFO L93 Difference]: Finished difference Result 24902 states and 28727 transitions. [2020-10-28 14:00:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:00:57,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-28 14:00:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:00:57,315 INFO L225 Difference]: With dead ends: 24902 [2020-10-28 14:00:57,315 INFO L226 Difference]: Without dead ends: 14008 [2020-10-28 14:00:57,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:00:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14008 states. [2020-10-28 14:00:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14008 to 13775. [2020-10-28 14:00:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13775 states. [2020-10-28 14:00:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13775 states to 13775 states and 15409 transitions. [2020-10-28 14:00:57,675 INFO L78 Accepts]: Start accepts. Automaton has 13775 states and 15409 transitions. Word has length 326 [2020-10-28 14:00:57,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:00:57,676 INFO L481 AbstractCegarLoop]: Abstraction has 13775 states and 15409 transitions. [2020-10-28 14:00:57,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:00:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states and 15409 transitions. [2020-10-28 14:00:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-28 14:00:57,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:00:57,685 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:00:57,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:00:57,686 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:00:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:00:57,687 INFO L82 PathProgramCache]: Analyzing trace with hash -4185823, now seen corresponding path program 1 times [2020-10-28 14:00:57,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:00:57,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743721695] [2020-10-28 14:00:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:00:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:00:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:00:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-28 14:01:00,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:00,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2792 [2020-10-28 14:01:00,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-28 14:01:00,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 14:01:00,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:00,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:01:00,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:00,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:01:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:01:00,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:01:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:01:00,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 14:01:00,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:00,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 14:01:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:00,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:00,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 14:01:00,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 14:01:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:00,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 14:01:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2020-10-28 14:01:01,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743721695] [2020-10-28 14:01:01,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:01,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:01:01,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309774055] [2020-10-28 14:01:01,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:01:01,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:01,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:01:01,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:01:01,034 INFO L87 Difference]: Start difference. First operand 13775 states and 15409 transitions. Second operand 5 states. [2020-10-28 14:01:09,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:09,893 INFO L93 Difference]: Finished difference Result 26144 states and 29358 transitions. [2020-10-28 14:01:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:01:09,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-28 14:01:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:09,932 INFO L225 Difference]: With dead ends: 26144 [2020-10-28 14:01:09,932 INFO L226 Difference]: Without dead ends: 12375 [2020-10-28 14:01:09,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:01:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12375 states. [2020-10-28 14:01:10,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12375 to 12313. [2020-10-28 14:01:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12313 states. [2020-10-28 14:01:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12313 states to 12313 states and 13169 transitions. [2020-10-28 14:01:10,207 INFO L78 Accepts]: Start accepts. Automaton has 12313 states and 13169 transitions. Word has length 332 [2020-10-28 14:01:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:10,208 INFO L481 AbstractCegarLoop]: Abstraction has 12313 states and 13169 transitions. [2020-10-28 14:01:10,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:01:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12313 states and 13169 transitions. [2020-10-28 14:01:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-28 14:01:10,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:10,220 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:10,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:01:10,220 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -97730025, now seen corresponding path program 1 times [2020-10-28 14:01:10,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:10,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041304147] [2020-10-28 14:01:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:10,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-28 14:01:15,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:01:15,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 14:01:15,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-28 14:01:15,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 14:01:15,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:15,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:01:15,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 14:01:15,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:01:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 14:01:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 14:01:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 14:01:15,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 14:01:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-28 14:01:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:01:15,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:01:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 14:01:15,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 249 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 14:01:15,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041304147] [2020-10-28 14:01:15,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:15,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:15,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871897099] [2020-10-28 14:01:15,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:15,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:15,857 INFO L87 Difference]: Start difference. First operand 12313 states and 13169 transitions. Second operand 7 states. [2020-10-28 14:01:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:32,567 INFO L93 Difference]: Finished difference Result 32725 states and 36041 transitions. [2020-10-28 14:01:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:01:32,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-28 14:01:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:32,627 INFO L225 Difference]: With dead ends: 32725 [2020-10-28 14:01:32,627 INFO L226 Difference]: Without dead ends: 20418 [2020-10-28 14:01:32,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:01:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20418 states. [2020-10-28 14:01:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20418 to 19544. [2020-10-28 14:01:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19544 states. [2020-10-28 14:01:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19544 states to 19544 states and 21040 transitions. [2020-10-28 14:01:33,065 INFO L78 Accepts]: Start accepts. Automaton has 19544 states and 21040 transitions. Word has length 344 [2020-10-28 14:01:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:33,066 INFO L481 AbstractCegarLoop]: Abstraction has 19544 states and 21040 transitions. [2020-10-28 14:01:33,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 19544 states and 21040 transitions. [2020-10-28 14:01:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 14:01:33,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:33,079 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, 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, 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] [2020-10-28 14:01:33,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:01:33,079 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:33,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:33,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1578243907, now seen corresponding path program 1 times [2020-10-28 14:01:33,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:33,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651544265] [2020-10-28 14:01:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 14:01:38,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:01:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 14:01:38,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 14:01:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 14:01:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:38,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:38,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:01:38,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:01:38,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:38,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:01:38,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:01:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 14:01:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 14:01:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 14:01:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 14:01:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-28 14:01:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 14:01:38,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:38,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 14:01:38,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-28 14:01:38,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:38,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 231 proven. 95 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-28 14:01:38,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651544265] [2020-10-28 14:01:38,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:38,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:01:38,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969966025] [2020-10-28 14:01:38,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:01:38,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:38,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:01:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:01:38,883 INFO L87 Difference]: Start difference. First operand 19544 states and 21040 transitions. Second operand 8 states. [2020-10-28 14:01:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:49,682 INFO L93 Difference]: Finished difference Result 47154 states and 51810 transitions. [2020-10-28 14:01:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:01:49,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 363 [2020-10-28 14:01:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:49,764 INFO L225 Difference]: With dead ends: 47154 [2020-10-28 14:01:49,765 INFO L226 Difference]: Without dead ends: 27620 [2020-10-28 14:01:49,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:01:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27620 states. [2020-10-28 14:01:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27620 to 27474. [2020-10-28 14:01:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27474 states. [2020-10-28 14:01:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27474 states to 27474 states and 30123 transitions. [2020-10-28 14:01:50,436 INFO L78 Accepts]: Start accepts. Automaton has 27474 states and 30123 transitions. Word has length 363 [2020-10-28 14:01:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:50,436 INFO L481 AbstractCegarLoop]: Abstraction has 27474 states and 30123 transitions. [2020-10-28 14:01:50,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:01:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 27474 states and 30123 transitions. [2020-10-28 14:01:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 14:01:50,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:50,455 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:50,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:01:50,455 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:50,456 INFO L82 PathProgramCache]: Analyzing trace with hash -570706413, now seen corresponding path program 1 times [2020-10-28 14:01:50,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:50,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956139822] [2020-10-28 14:01:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:55,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 14:01:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:55,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:55,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:55,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:55,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:01:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:55,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:55,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:55,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 14:01:55,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 14:01:55,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:55,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:55,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 14:01:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:55,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 14:01:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:56,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 14:01:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-28 14:01:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:56,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:56,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:56,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 159 proven. 184 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 14:01:56,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956139822] [2020-10-28 14:01:56,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:56,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:56,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124731609] [2020-10-28 14:01:56,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:56,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:56,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:56,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:56,159 INFO L87 Difference]: Start difference. First operand 27474 states and 30123 transitions. Second operand 7 states. [2020-10-28 14:02:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:06,418 INFO L93 Difference]: Finished difference Result 55031 states and 60460 transitions. [2020-10-28 14:02:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:02:06,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2020-10-28 14:02:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:06,470 INFO L225 Difference]: With dead ends: 55031 [2020-10-28 14:02:06,470 INFO L226 Difference]: Without dead ends: 27567 [2020-10-28 14:02:06,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:02:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27567 states. [2020-10-28 14:02:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27567 to 26765. [2020-10-28 14:02:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26765 states. [2020-10-28 14:02:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26765 states to 26765 states and 28979 transitions. [2020-10-28 14:02:07,221 INFO L78 Accepts]: Start accepts. Automaton has 26765 states and 28979 transitions. Word has length 363 [2020-10-28 14:02:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:07,221 INFO L481 AbstractCegarLoop]: Abstraction has 26765 states and 28979 transitions. [2020-10-28 14:02:07,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 26765 states and 28979 transitions. [2020-10-28 14:02:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-28 14:02:07,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:07,233 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:07,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:02:07,234 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:07,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash -790267217, now seen corresponding path program 1 times [2020-10-28 14:02:07,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:07,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294609442] [2020-10-28 14:02:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:07,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:08,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:12,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:12,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-28 14:02:12,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:02:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:02:12,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:12,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:02:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:02:12,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 14:02:12,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:02:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:02:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 14:02:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:12,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 14:02:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:12,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 14:02:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:12,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 14:02:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 159 proven. 184 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-28 14:02:13,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294609442] [2020-10-28 14:02:13,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:13,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:02:13,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33908177] [2020-10-28 14:02:13,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:02:13,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:13,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:02:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:02:13,064 INFO L87 Difference]: Start difference. First operand 26765 states and 28979 transitions. Second operand 8 states.