/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/Problem12_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:21:41,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:21:41,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:21:41,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:21:41,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:21:41,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:21:41,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:21:41,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:21:41,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:21:41,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:21:41,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:21:41,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:21:41,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:21:41,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:21:41,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:21:41,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:21:41,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:21:41,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:21:41,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:21:41,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:21:41,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:21:41,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:21:41,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:21:41,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:21:41,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:21:41,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:21:41,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:21:41,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:21:41,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:21:41,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:21:41,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:21:41,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:21:41,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:21:41,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:21:41,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:21:41,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:21:41,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:21:41,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:21:41,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:21:41,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:21:41,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:21:41,315 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 12:21:41,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:21:41,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:21:41,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:21:41,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:21:41,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:21:41,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:21:41,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:21:41,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:21:41,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:21:41,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:21:41,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:21:41,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:21:41,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:21:41,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:21:41,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:21:41,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:21:41,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:21:41,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:21:41,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:21:41,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:21:41,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:21:41,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:21:41,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:21:41,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:21:41,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:21:41,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:21:41,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:21:41,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:21:41,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:21:41,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:21:41,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:21:41,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:21:41,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:21:41,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:21:41,857 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:21:41,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-28 12:21:41,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0249e77/5476173e06a54a069d7a5bdc7d545c5c/FLAG8a372881c [2020-10-28 12:21:43,032 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:21:43,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label35.c [2020-10-28 12:21:43,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0249e77/5476173e06a54a069d7a5bdc7d545c5c/FLAG8a372881c [2020-10-28 12:21:43,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0249e77/5476173e06a54a069d7a5bdc7d545c5c [2020-10-28 12:21:43,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:21:43,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:21:43,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:21:43,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:21:43,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:21:43,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:21:43" (1/1) ... [2020-10-28 12:21:43,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4364c4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:43, skipping insertion in model container [2020-10-28 12:21:43,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:21:43" (1/1) ... [2020-10-28 12:21:43,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:21:43,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:21:45,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:21:45,116 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:21:45,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:21:45,905 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:21:45,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45 WrapperNode [2020-10-28 12:21:45,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:21:45,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:21:45,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:21:45,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:21:45,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:45,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:46,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:46,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:46,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:46,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:46,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (1/1) ... [2020-10-28 12:21:46,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:21:46,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:21:46,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:21:46,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:21:46,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (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 12:21:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:21:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:21:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:21:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:21:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:21:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:21:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:21:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:21:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:21:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:21:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:21:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:21:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:21:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:21:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:21:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:21:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:21:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:21:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:21:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:21:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:21:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:21:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:21:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:21:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:21:51,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:21:51,678 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:21:51,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:21:51 BoogieIcfgContainer [2020-10-28 12:21:51,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:21:51,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:21:51,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:21:51,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:21:51,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:21:43" (1/3) ... [2020-10-28 12:21:51,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcd1495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:21:51, skipping insertion in model container [2020-10-28 12:21:51,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:45" (2/3) ... [2020-10-28 12:21:51,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcd1495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:21:51, skipping insertion in model container [2020-10-28 12:21:51,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:21:51" (3/3) ... [2020-10-28 12:21:51,698 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label35.c [2020-10-28 12:21:51,712 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:21:51,720 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:21:51,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:21:51,772 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:21:51,772 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:21:51,772 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:21:51,773 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:21:51,773 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:21:51,773 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:21:51,773 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:21:51,773 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:21:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:21:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 12:21:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:51,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:51,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:51,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1638571924, now seen corresponding path program 1 times [2020-10-28 12:21:51,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:51,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801378837] [2020-10-28 12:21:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:52,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 12:21:52,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:52,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-28 12:21:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:52,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 12:21:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:21:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:52,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:52,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:21:52,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:52,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:52,763 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 12:21:52,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801378837] [2020-10-28 12:21:52,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:52,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:21:52,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901063812] [2020-10-28 12:21:52,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:21:52,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:52,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:21:52,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:21:52,796 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:22:03,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:03,024 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:22:03,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:22:03,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-28 12:22:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:03,057 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:22:03,058 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:22:03,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:22:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:22:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:22:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:22:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-28 12:22:03,250 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 14 [2020-10-28 12:22:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:03,251 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-28 12:22:03,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:22:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-28 12:22:03,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 12:22:03,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:03,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:22:03,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:22:03,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:03,261 INFO L82 PathProgramCache]: Analyzing trace with hash -200703106, now seen corresponding path program 1 times [2020-10-28 12:22:03,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:03,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814673765] [2020-10-28 12:22:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:04,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:04,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 12:22:04,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:22:04,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-28 12:22:04,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:04,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:04,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:04,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:04,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:22:04,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:22:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:04,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:04,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:22:04,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:04,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:04,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:22:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:04,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:22:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:22:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:04,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:04,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814673765] [2020-10-28 12:22:04,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:22:04,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:22:04,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582136950] [2020-10-28 12:22:04,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:04,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:04,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:04,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:04,882 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-28 12:22:21,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:21,225 INFO L93 Difference]: Finished difference Result 4738 states and 8320 transitions. [2020-10-28 12:22:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:22:21,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-10-28 12:22:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:21,259 INFO L225 Difference]: With dead ends: 4738 [2020-10-28 12:22:21,259 INFO L226 Difference]: Without dead ends: 3190 [2020-10-28 12:22:21,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:22:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2020-10-28 12:22:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3120. [2020-10-28 12:22:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-28 12:22:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4910 transitions. [2020-10-28 12:22:21,398 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4910 transitions. Word has length 83 [2020-10-28 12:22:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:21,399 INFO L481 AbstractCegarLoop]: Abstraction has 3120 states and 4910 transitions. [2020-10-28 12:22:21,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4910 transitions. [2020-10-28 12:22:21,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 12:22:21,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:21,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:21,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:22:21,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:21,407 INFO L82 PathProgramCache]: Analyzing trace with hash 382995378, now seen corresponding path program 1 times [2020-10-28 12:22:21,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:21,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270929222] [2020-10-28 12:22:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:21,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:21,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:21,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:22:21,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:21,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-28 12:22:21,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:21,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:22:21,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 12:22:21,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:21,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:21,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:21,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:21,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:21,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:21,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:22:21,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:21,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:21,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:21,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:21,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:21,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:21,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:21,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:22:21,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:21,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 12:22:21,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:21,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:21,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:22,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270929222] [2020-10-28 12:22:22,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:22,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:22:22,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485994904] [2020-10-28 12:22:22,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:22:22,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:22,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:22:22,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:22:22,097 INFO L87 Difference]: Start difference. First operand 3120 states and 4910 transitions. Second operand 5 states. [2020-10-28 12:22:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:35,340 INFO L93 Difference]: Finished difference Result 9384 states and 14871 transitions. [2020-10-28 12:22:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:22:35,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-28 12:22:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:35,389 INFO L225 Difference]: With dead ends: 9384 [2020-10-28 12:22:35,390 INFO L226 Difference]: Without dead ends: 4717 [2020-10-28 12:22:35,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 12:22:35,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2020-10-28 12:22:35,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 4692. [2020-10-28 12:22:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2020-10-28 12:22:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6541 transitions. [2020-10-28 12:22:35,554 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6541 transitions. Word has length 89 [2020-10-28 12:22:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:35,562 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6541 transitions. [2020-10-28 12:22:35,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:22:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6541 transitions. [2020-10-28 12:22:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 12:22:35,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:35,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:35,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:22:35,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:35,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:35,573 INFO L82 PathProgramCache]: Analyzing trace with hash -478230774, now seen corresponding path program 1 times [2020-10-28 12:22:35,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:35,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099391465] [2020-10-28 12:22:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:36,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:22:36,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-28 12:22:36,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:36,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 12:22:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:36,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:36,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:36,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:22:36,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:36,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:36,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:36,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:36,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:22:36,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 12:22:36,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:36,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:36,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:22:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:37,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099391465] [2020-10-28 12:22:37,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:22:37,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:22:37,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480941602] [2020-10-28 12:22:37,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:37,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:37,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:37,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:37,087 INFO L87 Difference]: Start difference. First operand 4692 states and 6541 transitions. Second operand 7 states. [2020-10-28 12:22:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:52,660 INFO L93 Difference]: Finished difference Result 14355 states and 20478 transitions. [2020-10-28 12:22:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:22:52,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-10-28 12:22:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:52,715 INFO L225 Difference]: With dead ends: 14355 [2020-10-28 12:22:52,715 INFO L226 Difference]: Without dead ends: 9669 [2020-10-28 12:22:52,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:22:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2020-10-28 12:22:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 9559. [2020-10-28 12:22:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9559 states. [2020-10-28 12:22:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9559 states to 9559 states and 12566 transitions. [2020-10-28 12:22:53,007 INFO L78 Accepts]: Start accepts. Automaton has 9559 states and 12566 transitions. Word has length 109 [2020-10-28 12:22:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:53,007 INFO L481 AbstractCegarLoop]: Abstraction has 9559 states and 12566 transitions. [2020-10-28 12:22:53,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9559 states and 12566 transitions. [2020-10-28 12:22:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 12:22:53,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:53,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:53,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:22:53,010 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash 907579898, now seen corresponding path program 1 times [2020-10-28 12:22:53,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:53,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312287614] [2020-10-28 12:22:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:53,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:54,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 964 [2020-10-28 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:54,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:54,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:22:54,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:54,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:54,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:54,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:54,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:54,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:54,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:22:54,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 12:22:54,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:54,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:54,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:22:54,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:22:54,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312287614] [2020-10-28 12:22:54,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:22:54,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:22:54,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827414121] [2020-10-28 12:22:54,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:54,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:54,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:54,515 INFO L87 Difference]: Start difference. First operand 9559 states and 12566 transitions. Second operand 7 states. [2020-10-28 12:23:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:14,735 INFO L93 Difference]: Finished difference Result 29296 states and 40260 transitions. [2020-10-28 12:23:14,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:23:14,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-28 12:23:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:14,825 INFO L225 Difference]: With dead ends: 29296 [2020-10-28 12:23:14,825 INFO L226 Difference]: Without dead ends: 19743 [2020-10-28 12:23:14,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:23:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19743 states. [2020-10-28 12:23:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19743 to 19431. [2020-10-28 12:23:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19431 states. [2020-10-28 12:23:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19431 states to 19431 states and 24449 transitions. [2020-10-28 12:23:15,488 INFO L78 Accepts]: Start accepts. Automaton has 19431 states and 24449 transitions. Word has length 117 [2020-10-28 12:23:15,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:15,489 INFO L481 AbstractCegarLoop]: Abstraction has 19431 states and 24449 transitions. [2020-10-28 12:23:15,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:23:15,489 INFO L276 IsEmpty]: Start isEmpty. Operand 19431 states and 24449 transitions. [2020-10-28 12:23:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 12:23:15,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:15,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:23:15,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:23:15,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:15,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:15,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1953717480, now seen corresponding path program 1 times [2020-10-28 12:23:15,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:15,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533769120] [2020-10-28 12:23:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:17,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:17,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 12:23:17,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:17,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-28 12:23:17,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:17,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:17,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:23:17,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 12:23:17,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:17,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:17,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:17,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:23:17,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:17,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:23:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:23:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-28 12:23:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:18,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 12:23:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:23:18,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533769120] [2020-10-28 12:23:18,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:23:18,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:23:18,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639877812] [2020-10-28 12:23:18,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:23:18,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:18,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:23:18,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:23:18,456 INFO L87 Difference]: Start difference. First operand 19431 states and 24449 transitions. Second operand 8 states. [2020-10-28 12:23:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:44,228 INFO L93 Difference]: Finished difference Result 62216 states and 84859 transitions. [2020-10-28 12:23:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:23:44,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-10-28 12:23:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:44,416 INFO L225 Difference]: With dead ends: 62216 [2020-10-28 12:23:44,417 INFO L226 Difference]: Without dead ends: 42791 [2020-10-28 12:23:44,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:23:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42791 states. [2020-10-28 12:23:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42791 to 42641. [2020-10-28 12:23:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42641 states. [2020-10-28 12:23:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42641 states to 42641 states and 55246 transitions. [2020-10-28 12:23:45,979 INFO L78 Accepts]: Start accepts. Automaton has 42641 states and 55246 transitions. Word has length 212 [2020-10-28 12:23:45,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:45,980 INFO L481 AbstractCegarLoop]: Abstraction has 42641 states and 55246 transitions. [2020-10-28 12:23:45,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:23:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 42641 states and 55246 transitions. [2020-10-28 12:23:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 12:23:45,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:45,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:45,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:23:45,987 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash 765375300, now seen corresponding path program 1 times [2020-10-28 12:23:45,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:45,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259828045] [2020-10-28 12:23:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:46,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:49,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:49,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 12:23:49,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:23:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3358 [2020-10-28 12:23:49,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:49,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:23:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:23:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:49,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:49,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:23:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:49,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:49,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:23:49,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 12:23:49,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:49,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:23:49,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:23:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:50,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:50,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:23:50,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 12:23:50,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:50,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:23:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:23:50,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259828045] [2020-10-28 12:23:50,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:50,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:23:50,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57406827] [2020-10-28 12:23:50,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:23:50,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:23:50,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:23:50,719 INFO L87 Difference]: Start difference. First operand 42641 states and 55246 transitions. Second operand 6 states. [2020-10-28 12:24:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:10,852 INFO L93 Difference]: Finished difference Result 102465 states and 136823 transitions. [2020-10-28 12:24:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:24:10,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 248 [2020-10-28 12:24:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:11,148 INFO L225 Difference]: With dead ends: 102465 [2020-10-28 12:24:11,149 INFO L226 Difference]: Without dead ends: 60597 [2020-10-28 12:24:11,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:24:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60597 states. [2020-10-28 12:24:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60597 to 59028. [2020-10-28 12:24:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59028 states. [2020-10-28 12:24:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59028 states to 59028 states and 78022 transitions. [2020-10-28 12:24:13,907 INFO L78 Accepts]: Start accepts. Automaton has 59028 states and 78022 transitions. Word has length 248 [2020-10-28 12:24:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:13,908 INFO L481 AbstractCegarLoop]: Abstraction has 59028 states and 78022 transitions. [2020-10-28 12:24:13,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:24:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 59028 states and 78022 transitions. [2020-10-28 12:24:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 12:24:13,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:13,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:13,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:24:13,914 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash -744086324, now seen corresponding path program 1 times [2020-10-28 12:24:13,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:13,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960352578] [2020-10-28 12:24:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:17,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:17,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 12:24:17,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:24:17,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3519 [2020-10-28 12:24:17,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:17,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:24:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:24:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:17,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:17,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:17,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:24:17,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:17,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:17,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 12:24:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:24:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:18,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:24:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:18,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:24:18,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-28 12:24:18,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:18,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:24:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:24:18,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960352578] [2020-10-28 12:24:18,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:18,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:24:18,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881734943] [2020-10-28 12:24:18,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:24:18,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:18,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:24:18,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:24:18,559 INFO L87 Difference]: Start difference. First operand 59028 states and 78022 transitions. Second operand 6 states. [2020-10-28 12:24:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:39,907 INFO L93 Difference]: Finished difference Result 144875 states and 199176 transitions. [2020-10-28 12:24:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:24:39,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 252 [2020-10-28 12:24:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:40,441 INFO L225 Difference]: With dead ends: 144875 [2020-10-28 12:24:40,442 INFO L226 Difference]: Without dead ends: 86620 [2020-10-28 12:24:40,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:24:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86620 states. [2020-10-28 12:24:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86620 to 86514. [2020-10-28 12:24:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86514 states. [2020-10-28 12:24:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86514 states to 86514 states and 111740 transitions. [2020-10-28 12:24:43,223 INFO L78 Accepts]: Start accepts. Automaton has 86514 states and 111740 transitions. Word has length 252 [2020-10-28 12:24:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:43,224 INFO L481 AbstractCegarLoop]: Abstraction has 86514 states and 111740 transitions. [2020-10-28 12:24:43,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:24:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 86514 states and 111740 transitions. [2020-10-28 12:24:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 12:24:43,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:43,233 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:24:43,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:24:43,233 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash -493355766, now seen corresponding path program 1 times [2020-10-28 12:24:43,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:43,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660791746] [2020-10-28 12:24:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:43,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:43,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 12:24:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:24:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 12:24:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:24:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 12:24:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:24:48,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:48,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:48,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:24:48,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 12:24:48,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:48,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:48,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:24:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:24:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:49,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:49,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 12:24:49,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-28 12:24:49,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:49,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:49,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:24:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-28 12:24:49,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660791746] [2020-10-28 12:24:49,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:49,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:24:49,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664996325] [2020-10-28 12:24:49,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:24:49,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:24:49,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:24:49,770 INFO L87 Difference]: Start difference. First operand 86514 states and 111740 transitions. Second operand 5 states. [2020-10-28 12:25:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:08,763 INFO L93 Difference]: Finished difference Result 172263 states and 222974 transitions. [2020-10-28 12:25:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:25:08,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-28 12:25:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:09,027 INFO L225 Difference]: With dead ends: 172263 [2020-10-28 12:25:09,027 INFO L226 Difference]: Without dead ends: 86522 [2020-10-28 12:25:09,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:25:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86522 states. [2020-10-28 12:25:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86522 to 86514. [2020-10-28 12:25:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86514 states. [2020-10-28 12:25:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86514 states to 86514 states and 107923 transitions. [2020-10-28 12:25:12,157 INFO L78 Accepts]: Start accepts. Automaton has 86514 states and 107923 transitions. Word has length 325 [2020-10-28 12:25:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:12,159 INFO L481 AbstractCegarLoop]: Abstraction has 86514 states and 107923 transitions. [2020-10-28 12:25:12,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:25:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 86514 states and 107923 transitions. [2020-10-28 12:25:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-28 12:25:12,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:12,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:25:12,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:25:12,188 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:12,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:12,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2054684656, now seen corresponding path program 1 times [2020-10-28 12:25:12,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:12,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478636969] [2020-10-28 12:25:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:17,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:17,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-28 12:25:17,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:25:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 12:25:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:17,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:25:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-28 12:25:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:17,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:17,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:25:17,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:17,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:17,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:25:17,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 12:25:17,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:17,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:25:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:17,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:25:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:18,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:18,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 12:25:18,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 12:25:18,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:18,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:18,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 12:25:18,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:25:18,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478636969] [2020-10-28 12:25:18,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:18,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:18,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798299570] [2020-10-28 12:25:18,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:18,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:18,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:18,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:18,352 INFO L87 Difference]: Start difference. First operand 86514 states and 107923 transitions. Second operand 7 states.