/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=DEEPEST --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/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:54:45,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:54:45,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:54:45,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:54:45,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:54:45,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:54:45,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:54:45,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:54:45,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:54:45,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:54:45,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:54:45,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:54:45,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:54:45,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:54:45,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:54:45,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:54:45,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:54:45,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:54:45,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:54:45,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:54:45,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:54:45,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:54:45,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:54:45,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:54:45,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:54:45,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:54:45,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:54:45,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:54:45,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:54:45,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:54:45,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:54:45,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:54:45,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:54:45,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:54:45,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:54:45,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:54:45,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:54:45,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:54:45,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:54:45,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:54:45,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:54:45,173 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 [2020-10-27 22:54:45,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:54:45,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:54:45,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:54:45,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:54:45,233 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:54:45,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:54:45,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:54:45,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:54:45,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:54:45,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:54:45,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:54:45,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:54:45,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:54:45,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:54:45,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:54:45,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:54:45,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:54:45,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:54:45,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:54:45,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:54:45,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:54:45,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:54:45,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:54:45,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:54:45,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:54:45,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:54:45,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:54:45,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:54:45,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:54:45,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:54:45,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:54:45,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:54:45,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:54:45,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:54:45,672 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:54:45,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-27 22:54:45,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131891956/0ab8c806a49f4926b4e45827c2e3c3b0/FLAG67ee5491d [2020-10-27 22:54:46,432 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:54:46,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-27 22:54:46,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131891956/0ab8c806a49f4926b4e45827c2e3c3b0/FLAG67ee5491d [2020-10-27 22:54:46,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/131891956/0ab8c806a49f4926b4e45827c2e3c3b0 [2020-10-27 22:54:46,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:54:46,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:54:46,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:54:46,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:54:46,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:54:46,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:54:46" (1/1) ... [2020-10-27 22:54:46,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea84509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:46, skipping insertion in model container [2020-10-27 22:54:46,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:54:46" (1/1) ... [2020-10-27 22:54:46,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:54:46,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:54:47,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:54:47,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:54:47,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:54:47,102 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:54:47,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47 WrapperNode [2020-10-27 22:54:47,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:54:47,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:54:47,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:54:47,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:54:47,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (1/1) ... [2020-10-27 22:54:47,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:54:47,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:54:47,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:54:47,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:54:47,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (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 [2020-10-27 22:54:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:54:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:54:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:54:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 22:54:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 22:54:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 22:54:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 22:54:47,316 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 22:54:47,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:54:47,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 22:54:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:54:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:54:47,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:54:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:54:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 22:54:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 22:54:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 22:54:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 22:54:47,317 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 22:54:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 22:54:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 22:54:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 22:54:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 22:54:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 22:54:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:54:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:54:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:54:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:54:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:54:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:54:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:54:48,031 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:54:48,031 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 22:54:48,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:54:48 BoogieIcfgContainer [2020-10-27 22:54:48,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:54:48,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:54:48,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:54:48,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:54:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:54:46" (1/3) ... [2020-10-27 22:54:48,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d431fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:54:48, skipping insertion in model container [2020-10-27 22:54:48,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:54:47" (2/3) ... [2020-10-27 22:54:48,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d431fbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:54:48, skipping insertion in model container [2020-10-27 22:54:48,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:54:48" (3/3) ... [2020-10-27 22:54:48,049 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2020-10-27 22:54:48,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:54:48,068 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:54:48,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:54:48,136 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:54:48,136 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:54:48,136 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:54:48,136 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:54:48,137 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:54:48,137 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:54:48,137 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:54:48,137 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:54:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-10-27 22:54:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 22:54:48,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:48,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:48,193 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:48,205 INFO L82 PathProgramCache]: Analyzing trace with hash -929668031, now seen corresponding path program 1 times [2020-10-27 22:54:48,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:48,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435583035] [2020-10-27 22:54:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:54:48,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-27 22:54:48,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 22:54:48,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 22:54:49,165 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:49,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:49,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:49,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:49,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:49,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:49,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:54:49,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:49,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:49,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:49,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:54:49,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:49,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:49,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:54:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:49,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:49,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:49,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:54:49,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:54:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:54:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:49,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:54:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:49,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:54:49,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:49,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:49,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:54:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:49,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:49,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:49,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:54:49,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:49,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:49,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:49,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435583035] [2020-10-27 22:54:49,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:49,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:54:49,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488530584] [2020-10-27 22:54:49,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:54:49,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:49,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:54:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:54:49,430 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 6 states. [2020-10-27 22:54:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:50,071 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2020-10-27 22:54:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:54:50,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-27 22:54:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:50,084 INFO L225 Difference]: With dead ends: 154 [2020-10-27 22:54:50,085 INFO L226 Difference]: Without dead ends: 85 [2020-10-27 22:54:50,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:54:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-27 22:54:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-27 22:54:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 22:54:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-10-27 22:54:50,147 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 50 [2020-10-27 22:54:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:50,148 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-10-27 22:54:50,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:54:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-10-27 22:54:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 22:54:50,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:50,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:50,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:54:50,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:50,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:50,152 INFO L82 PathProgramCache]: Analyzing trace with hash -270136509, now seen corresponding path program 1 times [2020-10-27 22:54:50,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:50,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406108945] [2020-10-27 22:54:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:50,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:50,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 22:54:50,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-27 22:54:50,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:54:50,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:54:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:50,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:50,924 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:50,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:50,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:50,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:54:50,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:50,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:50,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:50,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:50,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:54:50,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:54:50,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:54:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:51,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:51,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:51,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:54:51,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 22:54:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:54:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 22:54:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:51,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:51,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:51,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:54:51,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:51,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:54:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:51,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:51,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:51,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:51,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:51,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:54:51,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:51,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:51,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:51,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406108945] [2020-10-27 22:54:51,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:51,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:54:51,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731382160] [2020-10-27 22:54:51,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:54:51,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:51,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:54:51,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:54:51,123 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 10 states. [2020-10-27 22:54:51,310 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:54:51,453 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:54:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:52,416 INFO L93 Difference]: Finished difference Result 155 states and 216 transitions. [2020-10-27 22:54:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:54:52,417 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-27 22:54:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:52,420 INFO L225 Difference]: With dead ends: 155 [2020-10-27 22:54:52,420 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 22:54:52,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:54:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 22:54:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2020-10-27 22:54:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 22:54:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 105 transitions. [2020-10-27 22:54:52,443 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 105 transitions. Word has length 50 [2020-10-27 22:54:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:52,443 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 105 transitions. [2020-10-27 22:54:52,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:54:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 105 transitions. [2020-10-27 22:54:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:54:52,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:52,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:52,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:54:52,446 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:52,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1818227069, now seen corresponding path program 1 times [2020-10-27 22:54:52,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:52,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808863501] [2020-10-27 22:54:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:52,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:55,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:55,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:54:55,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:54:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3135 [2020-10-27 22:54:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 22:54:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:54:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:55,778 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-27 22:54:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:55,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:55,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:55,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:55,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:54:55,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:55,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:55,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:55,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:55,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:55,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:54:55,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:55,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:54:55,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:55,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:55,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:54:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:55,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:55,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:55,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:55,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:55,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:54:55,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:55,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:54:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:54:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:55,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:55,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:55,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:54:55,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:55,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:55,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:54:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:55,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:55,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:55,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:55,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:54:55,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:54:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:56,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:56,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:56,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:54:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:56,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808863501] [2020-10-27 22:54:56,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:56,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:54:56,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74931107] [2020-10-27 22:54:56,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:54:56,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:56,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:54:56,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:54:56,033 INFO L87 Difference]: Start difference. First operand 85 states and 105 transitions. Second operand 9 states. [2020-10-27 22:54:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:57,122 INFO L93 Difference]: Finished difference Result 189 states and 247 transitions. [2020-10-27 22:54:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:54:57,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-27 22:54:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:57,131 INFO L225 Difference]: With dead ends: 189 [2020-10-27 22:54:57,131 INFO L226 Difference]: Without dead ends: 134 [2020-10-27 22:54:57,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:54:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-27 22:54:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 131. [2020-10-27 22:54:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 22:54:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 168 transitions. [2020-10-27 22:54:57,175 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 168 transitions. Word has length 65 [2020-10-27 22:54:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:57,176 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 168 transitions. [2020-10-27 22:54:57,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:54:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 168 transitions. [2020-10-27 22:54:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:54:57,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:57,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:57,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:54:57,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:57,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1072644339, now seen corresponding path program 1 times [2020-10-27 22:54:57,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:57,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033649247] [2020-10-27 22:54:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:54:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:54:58,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:54:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1195 [2020-10-27 22:54:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 22:54:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:54:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:54:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:54:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:54:58,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:54:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:54:58,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:58,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:54:58,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:54:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:54:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:54:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:54:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:54:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:58,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:54:58,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:54:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:54:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:54:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:54:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:58,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:54:58,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:58,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:58,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:54:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:54:58,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:58,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:54:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:54:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:54:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:54:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:54:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:54:58,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:54:58,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:54:58,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:54:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:54:58,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:54:58,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:54:58,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:54:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:54:58,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:54:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:54:58,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033649247] [2020-10-27 22:54:58,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:54:58,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:54:58,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553425138] [2020-10-27 22:54:58,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:54:58,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:54:58,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:54:58,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:54:58,797 INFO L87 Difference]: Start difference. First operand 131 states and 168 transitions. Second operand 9 states. [2020-10-27 22:54:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:54:59,907 INFO L93 Difference]: Finished difference Result 321 states and 428 transitions. [2020-10-27 22:54:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:54:59,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-27 22:54:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:54:59,913 INFO L225 Difference]: With dead ends: 321 [2020-10-27 22:54:59,914 INFO L226 Difference]: Without dead ends: 220 [2020-10-27 22:54:59,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:54:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-27 22:54:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 217. [2020-10-27 22:54:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-27 22:54:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 284 transitions. [2020-10-27 22:54:59,987 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 284 transitions. Word has length 65 [2020-10-27 22:54:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:54:59,988 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 284 transitions. [2020-10-27 22:54:59,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:54:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 284 transitions. [2020-10-27 22:54:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:54:59,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:54:59,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:54:59,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:54:59,990 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:54:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:54:59,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2082717885, now seen corresponding path program 1 times [2020-10-27 22:54:59,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:54:59,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174286670] [2020-10-27 22:54:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:00,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 22:55:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:00,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-27 22:55:00,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:55:00,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 22:55:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:55:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:00,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:00,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:00,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:00,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:00,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:00,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:00,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:00,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:00,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:00,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:00,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:00,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:55:00,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:00,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:00,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:00,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:55:00,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:00,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 22:55:00,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:00,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:55:01,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 22:55:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:01,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:01,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:01,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:01,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:01,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:01,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:01,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:55:01,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:01,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174286670] [2020-10-27 22:55:01,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:01,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 22:55:01,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955352014] [2020-10-27 22:55:01,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 22:55:01,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:01,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 22:55:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-27 22:55:01,169 INFO L87 Difference]: Start difference. First operand 217 states and 284 transitions. Second operand 14 states. [2020-10-27 22:55:01,326 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:55:02,114 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:02,277 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:03,143 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:03,965 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:06,948 INFO L93 Difference]: Finished difference Result 2098 states and 3010 transitions. [2020-10-27 22:55:06,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-27 22:55:06,949 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-27 22:55:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:06,979 INFO L225 Difference]: With dead ends: 2098 [2020-10-27 22:55:06,979 INFO L226 Difference]: Without dead ends: 1911 [2020-10-27 22:55:06,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1306 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=851, Invalid=3181, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 22:55:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-27 22:55:07,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1707. [2020-10-27 22:55:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-10-27 22:55:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2304 transitions. [2020-10-27 22:55:07,242 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2304 transitions. Word has length 65 [2020-10-27 22:55:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:07,243 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 2304 transitions. [2020-10-27 22:55:07,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 22:55:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2304 transitions. [2020-10-27 22:55:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 22:55:07,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:07,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:07,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:55:07,249 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1122801459, now seen corresponding path program 1 times [2020-10-27 22:55:07,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:07,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12271546] [2020-10-27 22:55:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:07,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:55:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:55:07,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-27 22:55:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 22:55:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:08,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:08,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:08,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:08,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:08,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:08,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:08,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:08,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:08,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:08,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:08,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:08,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:08,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:08,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:08,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:08,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:08,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:08,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:55:08,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:08,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:08,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:08,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:55:08,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 22:55:08,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:08,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12271546] [2020-10-27 22:55:08,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:08,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 22:55:08,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196686299] [2020-10-27 22:55:08,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:55:08,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:08,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:55:08,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:55:08,289 INFO L87 Difference]: Start difference. First operand 1707 states and 2304 transitions. Second operand 11 states. [2020-10-27 22:55:09,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:09,788 INFO L93 Difference]: Finished difference Result 4348 states and 5917 transitions. [2020-10-27 22:55:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:55:09,789 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-27 22:55:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:09,808 INFO L225 Difference]: With dead ends: 4348 [2020-10-27 22:55:09,809 INFO L226 Difference]: Without dead ends: 2671 [2020-10-27 22:55:09,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:55:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2020-10-27 22:55:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2668. [2020-10-27 22:55:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2668 states. [2020-10-27 22:55:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 3565 transitions. [2020-10-27 22:55:10,134 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 3565 transitions. Word has length 67 [2020-10-27 22:55:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:10,134 INFO L481 AbstractCegarLoop]: Abstraction has 2668 states and 3565 transitions. [2020-10-27 22:55:10,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:55:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 3565 transitions. [2020-10-27 22:55:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 22:55:10,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:10,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:10,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:55:10,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:10,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:10,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1908095365, now seen corresponding path program 1 times [2020-10-27 22:55:10,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:10,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767537356] [2020-10-27 22:55:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:10,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:10,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:55:10,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-27 22:55:10,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:55:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 22:55:10,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 22:55:10,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:10,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:10,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:10,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:10,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:10,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:10,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:10,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:10,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:10,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:10,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:55:10,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:10,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:10,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:10,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:55:10,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:10,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:10,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:10,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:10,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:55:10,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:10,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:11,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:55:11,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:11,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:11,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:11,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 22:55:11,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:11,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:55:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:11,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767537356] [2020-10-27 22:55:11,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:11,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 22:55:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153155169] [2020-10-27 22:55:11,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:55:11,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:55:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:55:11,096 INFO L87 Difference]: Start difference. First operand 2668 states and 3565 transitions. Second operand 13 states. [2020-10-27 22:55:11,462 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:12,573 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:55:13,182 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:55:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:14,577 INFO L93 Difference]: Finished difference Result 5924 states and 8001 transitions. [2020-10-27 22:55:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 22:55:14,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-27 22:55:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:14,600 INFO L225 Difference]: With dead ends: 5924 [2020-10-27 22:55:14,600 INFO L226 Difference]: Without dead ends: 3286 [2020-10-27 22:55:14,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 22:55:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2020-10-27 22:55:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3180. [2020-10-27 22:55:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2020-10-27 22:55:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 4267 transitions. [2020-10-27 22:55:14,946 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 4267 transitions. Word has length 67 [2020-10-27 22:55:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:14,947 INFO L481 AbstractCegarLoop]: Abstraction has 3180 states and 4267 transitions. [2020-10-27 22:55:14,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:55:14,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 4267 transitions. [2020-10-27 22:55:14,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-27 22:55:14,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:14,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:14,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:55:14,948 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1562225673, now seen corresponding path program 1 times [2020-10-27 22:55:14,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:14,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290611675] [2020-10-27 22:55:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:15,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:18,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:18,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:55:18,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:55:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3960 [2020-10-27 22:55:18,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 22:55:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:55:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:19,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:19,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:19,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:19,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:19,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:19,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:19,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:19,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 22:55:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:19,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:19,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:19,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:19,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:19,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:19,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:19,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:19,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290611675] [2020-10-27 22:55:19,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:19,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 22:55:19,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302497009] [2020-10-27 22:55:19,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 22:55:19,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:19,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 22:55:19,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:55:19,218 INFO L87 Difference]: Start difference. First operand 3180 states and 4267 transitions. Second operand 10 states. [2020-10-27 22:55:19,683 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-27 22:55:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:20,585 INFO L93 Difference]: Finished difference Result 6742 states and 8924 transitions. [2020-10-27 22:55:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:55:20,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-27 22:55:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:20,610 INFO L225 Difference]: With dead ends: 6742 [2020-10-27 22:55:20,611 INFO L226 Difference]: Without dead ends: 3592 [2020-10-27 22:55:20,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:55:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2020-10-27 22:55:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3204. [2020-10-27 22:55:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2020-10-27 22:55:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4296 transitions. [2020-10-27 22:55:20,972 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4296 transitions. Word has length 67 [2020-10-27 22:55:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:20,972 INFO L481 AbstractCegarLoop]: Abstraction has 3204 states and 4296 transitions. [2020-10-27 22:55:20,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 22:55:20,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4296 transitions. [2020-10-27 22:55:20,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 22:55:20,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:20,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:20,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:55:20,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:20,975 INFO L82 PathProgramCache]: Analyzing trace with hash -354471743, now seen corresponding path program 1 times [2020-10-27 22:55:20,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:20,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131325745] [2020-10-27 22:55:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 22:55:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-27 22:55:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:55:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 22:55:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:21,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:21,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:21,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:21,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:21,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:55:21,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:21,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:21,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:55:21,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:21,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:21,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:21,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:21,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:21,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:21,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:21,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:21,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:55:21,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:21,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:55:21,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:21,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:21,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131325745] [2020-10-27 22:55:21,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:21,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:55:21,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824908151] [2020-10-27 22:55:21,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:21,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:21,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:21,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:21,598 INFO L87 Difference]: Start difference. First operand 3204 states and 4296 transitions. Second operand 9 states. [2020-10-27 22:55:23,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:23,118 INFO L93 Difference]: Finished difference Result 7008 states and 9441 transitions. [2020-10-27 22:55:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:55:23,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-27 22:55:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:23,146 INFO L225 Difference]: With dead ends: 7008 [2020-10-27 22:55:23,146 INFO L226 Difference]: Without dead ends: 3855 [2020-10-27 22:55:23,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:55:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-10-27 22:55:23,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3846. [2020-10-27 22:55:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3846 states. [2020-10-27 22:55:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 5162 transitions. [2020-10-27 22:55:23,609 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 5162 transitions. Word has length 68 [2020-10-27 22:55:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:23,611 INFO L481 AbstractCegarLoop]: Abstraction has 3846 states and 5162 transitions. [2020-10-27 22:55:23,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 5162 transitions. [2020-10-27 22:55:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 22:55:23,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:23,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:23,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:55:23,613 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:23,613 INFO L82 PathProgramCache]: Analyzing trace with hash -823905504, now seen corresponding path program 1 times [2020-10-27 22:55:23,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:23,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076919558] [2020-10-27 22:55:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:23,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:23,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 22:55:23,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:23,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 22:55:23,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:55:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-27 22:55:23,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:24,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:24,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:24,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:24,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:24,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:24,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:24,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:24,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 22:55:24,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:55:24,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076919558] [2020-10-27 22:55:24,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:55:24,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 22:55:24,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105823327] [2020-10-27 22:55:24,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:55:24,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:24,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:55:24,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:55:24,312 INFO L87 Difference]: Start difference. First operand 3846 states and 5162 transitions. Second operand 12 states. [2020-10-27 22:55:24,941 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:25,191 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:55:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:25,766 INFO L93 Difference]: Finished difference Result 4208 states and 5786 transitions. [2020-10-27 22:55:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:55:25,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-27 22:55:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:25,795 INFO L225 Difference]: With dead ends: 4208 [2020-10-27 22:55:25,795 INFO L226 Difference]: Without dead ends: 4205 [2020-10-27 22:55:25,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:55:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2020-10-27 22:55:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 3954. [2020-10-27 22:55:26,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3954 states. [2020-10-27 22:55:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 5260 transitions. [2020-10-27 22:55:26,180 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 5260 transitions. Word has length 68 [2020-10-27 22:55:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:26,181 INFO L481 AbstractCegarLoop]: Abstraction has 3954 states and 5260 transitions. [2020-10-27 22:55:26,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:55:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 5260 transitions. [2020-10-27 22:55:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:55:26,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:26,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:26,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:55:26,185 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:26,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1924343117, now seen corresponding path program 1 times [2020-10-27 22:55:26,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:26,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642234350] [2020-10-27 22:55:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:26,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 22:55:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:31,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:31,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:31,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:55:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:31,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 22:55:31,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:55:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:31,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:31,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:31,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:31,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:55:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:31,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:55:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:55:31,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:55:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:31,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:55:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:31,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:31,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:31,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 22:55:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:55:31,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:55:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:31,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:31,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:31,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:31,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:55:31,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:31,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:55:31,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642234350] [2020-10-27 22:55:31,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:31,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:55:31,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16730791] [2020-10-27 22:55:31,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:55:31,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:31,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:55:31,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:55:31,938 INFO L87 Difference]: Start difference. First operand 3954 states and 5260 transitions. Second operand 21 states. [2020-10-27 22:55:32,219 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-27 22:55:32,621 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:55:33,314 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:55:33,775 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:35,125 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 22:55:35,276 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-27 22:55:35,509 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:55:35,679 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 22:55:35,941 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:55:36,097 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 22:55:36,398 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-27 22:55:36,904 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-27 22:55:38,484 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-27 22:55:39,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:39,512 INFO L93 Difference]: Finished difference Result 14507 states and 19160 transitions. [2020-10-27 22:55:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-27 22:55:39,513 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-27 22:55:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:39,601 INFO L225 Difference]: With dead ends: 14507 [2020-10-27 22:55:39,602 INFO L226 Difference]: Without dead ends: 11564 [2020-10-27 22:55:39,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1155, Invalid=6327, Unknown=0, NotChecked=0, Total=7482 [2020-10-27 22:55:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11564 states. [2020-10-27 22:55:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11564 to 10083. [2020-10-27 22:55:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10083 states. [2020-10-27 22:55:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10083 states to 10083 states and 13383 transitions. [2020-10-27 22:55:40,577 INFO L78 Accepts]: Start accepts. Automaton has 10083 states and 13383 transitions. Word has length 106 [2020-10-27 22:55:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:40,577 INFO L481 AbstractCegarLoop]: Abstraction has 10083 states and 13383 transitions. [2020-10-27 22:55:40,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:55:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 10083 states and 13383 transitions. [2020-10-27 22:55:40,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:55:40,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:40,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:40,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:55:40,583 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:40,584 INFO L82 PathProgramCache]: Analyzing trace with hash -321421455, now seen corresponding path program 1 times [2020-10-27 22:55:40,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:40,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647714094] [2020-10-27 22:55:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:40,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:55:45,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:55:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 22:55:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 22:55:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:55:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:45,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:55:45,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:45,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:45,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:45,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:45,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:45,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:45,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:45,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:45,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:55:45,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:45,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:45,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:45,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:55:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:55:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:45,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:55:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:55:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:45,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:55:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:45,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:55:45,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:45,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:45,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:45,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:55:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:45,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:55:45,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:55:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:45,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:45,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:55:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:45,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:45,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:45,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:45,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:45,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:55:46,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647714094] [2020-10-27 22:55:46,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:46,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:55:46,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960256682] [2020-10-27 22:55:46,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:55:46,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:55:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:55:46,042 INFO L87 Difference]: Start difference. First operand 10083 states and 13383 transitions. Second operand 9 states. [2020-10-27 22:55:46,273 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:55:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:55:47,977 INFO L93 Difference]: Finished difference Result 27424 states and 37026 transitions. [2020-10-27 22:55:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:55:47,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 22:55:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:55:48,076 INFO L225 Difference]: With dead ends: 27424 [2020-10-27 22:55:48,076 INFO L226 Difference]: Without dead ends: 17397 [2020-10-27 22:55:48,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:55:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17397 states. [2020-10-27 22:55:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17397 to 16552. [2020-10-27 22:55:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16552 states. [2020-10-27 22:55:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16552 states to 16552 states and 21949 transitions. [2020-10-27 22:55:49,684 INFO L78 Accepts]: Start accepts. Automaton has 16552 states and 21949 transitions. Word has length 106 [2020-10-27 22:55:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:55:49,684 INFO L481 AbstractCegarLoop]: Abstraction has 16552 states and 21949 transitions. [2020-10-27 22:55:49,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:55:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 16552 states and 21949 transitions. [2020-10-27 22:55:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:55:49,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:55:49,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:55:49,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:55:49,692 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:55:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:55:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1856763431, now seen corresponding path program 1 times [2020-10-27 22:55:49,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:55:49,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6945905] [2020-10-27 22:55:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:55:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:50,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:52,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:55:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:55:54,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 22:55:54,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:55:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:55:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 22:55:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:54,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:55:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:55:54,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:55:54,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:54,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:55:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:54,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:54,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:55:54,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:55:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:54,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:54,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:55,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:55:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:55:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:55:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:55:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:55,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 22:55:55,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:55:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:55,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:55,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:55:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:55,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:55:55,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:55,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:55:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:55,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:55:55,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:55:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:55:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:55:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:55,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:55:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:55,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:55:55,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:55:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:55:55,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:55:55,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:55:55,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:55:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:55:55,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:55:55,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:55:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:55:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:55,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:55:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:55:55,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:55:55,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:55:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:55:55,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:55:55,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:55:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:55:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:55:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:55:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:55:55,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:55:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:55:55,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:55:55,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:55:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:55:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:55:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:55:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:55:55,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6945905] [2020-10-27 22:55:55,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:55:55,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:55:55,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336914782] [2020-10-27 22:55:55,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:55:55,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:55:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:55:55,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:55:55,571 INFO L87 Difference]: Start difference. First operand 16552 states and 21949 transitions. Second operand 21 states. [2020-10-27 22:55:55,760 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 22:55:56,112 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 22:55:56,587 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-27 22:55:56,776 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 22:55:57,155 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:55:57,850 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:55:58,529 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 22:55:58,884 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-27 22:55:59,118 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-27 22:55:59,291 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 22:56:00,420 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 22:56:00,632 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 22:56:02,116 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-27 22:56:03,235 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-27 22:56:03,408 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-27 22:56:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:06,116 INFO L93 Difference]: Finished difference Result 56497 states and 76370 transitions. [2020-10-27 22:56:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-27 22:56:06,116 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 106 [2020-10-27 22:56:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:06,317 INFO L225 Difference]: With dead ends: 56497 [2020-10-27 22:56:06,317 INFO L226 Difference]: Without dead ends: 45062 [2020-10-27 22:56:06,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1246, Invalid=7684, Unknown=0, NotChecked=0, Total=8930 [2020-10-27 22:56:06,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45062 states. [2020-10-27 22:56:09,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45062 to 41132. [2020-10-27 22:56:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41132 states. [2020-10-27 22:56:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41132 states to 41132 states and 55109 transitions. [2020-10-27 22:56:10,124 INFO L78 Accepts]: Start accepts. Automaton has 41132 states and 55109 transitions. Word has length 106 [2020-10-27 22:56:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:10,125 INFO L481 AbstractCegarLoop]: Abstraction has 41132 states and 55109 transitions. [2020-10-27 22:56:10,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:56:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand 41132 states and 55109 transitions. [2020-10-27 22:56:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:56:10,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:10,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:10,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:56:10,138 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1056995443, now seen corresponding path program 1 times [2020-10-27 22:56:10,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:10,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555396377] [2020-10-27 22:56:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:10,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:13,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 22:56:15,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:15,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:15,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:15,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:15,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:15,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:56:15,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:15,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:56:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:56:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:15,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:15,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:15,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:56:15,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:56:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:15,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:56:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 22:56:15,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:56:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:15,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:56:15,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:15,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:15,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:56:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:15,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:15,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:15,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:15,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:56:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:56:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 22:56:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:56:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:56:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:15,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:56:15,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:56:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:56:15,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 22:56:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:56:15,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555396377] [2020-10-27 22:56:15,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:15,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:56:15,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577170689] [2020-10-27 22:56:15,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:56:15,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:15,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:56:15,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:56:15,675 INFO L87 Difference]: Start difference. First operand 41132 states and 55109 transitions. Second operand 13 states. [2020-10-27 22:56:15,917 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-27 22:56:17,228 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:17,358 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:56:22,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:22,572 INFO L93 Difference]: Finished difference Result 97213 states and 131876 transitions. [2020-10-27 22:56:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 22:56:22,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2020-10-27 22:56:22,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:22,796 INFO L225 Difference]: With dead ends: 97213 [2020-10-27 22:56:22,796 INFO L226 Difference]: Without dead ends: 60530 [2020-10-27 22:56:22,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=549, Invalid=2001, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 22:56:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60530 states. [2020-10-27 22:56:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60530 to 60102. [2020-10-27 22:56:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60102 states. [2020-10-27 22:56:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60102 states to 60102 states and 80502 transitions. [2020-10-27 22:56:28,121 INFO L78 Accepts]: Start accepts. Automaton has 60102 states and 80502 transitions. Word has length 106 [2020-10-27 22:56:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:28,121 INFO L481 AbstractCegarLoop]: Abstraction has 60102 states and 80502 transitions. [2020-10-27 22:56:28,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:56:28,121 INFO L276 IsEmpty]: Start isEmpty. Operand 60102 states and 80502 transitions. [2020-10-27 22:56:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:56:28,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:28,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:28,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:56:28,130 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:28,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:28,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1906274307, now seen corresponding path program 1 times [2020-10-27 22:56:28,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:28,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338274430] [2020-10-27 22:56:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:28,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:56:33,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:56:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 22:56:33,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 22:56:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:56:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:33,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:33,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:33,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:33,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:33,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:56:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:33,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:56:33,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:56:33,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:56:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:33,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:33,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:56:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:56:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:33,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:56:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:33,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:33,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:56:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:33,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:56:33,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:56:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:33,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:56:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:33,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:56:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 22:56:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:56:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:56:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:33,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:33,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:33,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:33,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:33,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:56:33,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:33,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:56:33,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338274430] [2020-10-27 22:56:33,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:33,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:56:33,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089142432] [2020-10-27 22:56:33,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:56:33,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:33,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:56:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:56:33,669 INFO L87 Difference]: Start difference. First operand 60102 states and 80502 transitions. Second operand 9 states. [2020-10-27 22:56:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:37,348 INFO L93 Difference]: Finished difference Result 107826 states and 144293 transitions. [2020-10-27 22:56:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:56:37,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 22:56:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:37,517 INFO L225 Difference]: With dead ends: 107826 [2020-10-27 22:56:37,517 INFO L226 Difference]: Without dead ends: 47794 [2020-10-27 22:56:37,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:56:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47794 states. [2020-10-27 22:56:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47794 to 44925. [2020-10-27 22:56:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44925 states. [2020-10-27 22:56:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44925 states to 44925 states and 58746 transitions. [2020-10-27 22:56:41,295 INFO L78 Accepts]: Start accepts. Automaton has 44925 states and 58746 transitions. Word has length 106 [2020-10-27 22:56:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:56:41,296 INFO L481 AbstractCegarLoop]: Abstraction has 44925 states and 58746 transitions. [2020-10-27 22:56:41,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:56:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 44925 states and 58746 transitions. [2020-10-27 22:56:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:56:41,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:56:41,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:56:41,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:56:41,302 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:56:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:56:41,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1490614031, now seen corresponding path program 1 times [2020-10-27 22:56:41,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:56:41,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089189374] [2020-10-27 22:56:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:56:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:41,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:41,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:41,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:43,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:56:46,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:56:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 22:56:46,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:56:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 22:56:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 22:56:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:56:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:56:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:56:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:56:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:56:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:56:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:56:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:56:46,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:56:46,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:56:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:56:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:56:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:56:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:56:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:56:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:56:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:56:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:56:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:56:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 22:56:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:56:46,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:56:46,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:56:46,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:56:46,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:56:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:56:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:56:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:56:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:56:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:56:46,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089189374] [2020-10-27 22:56:46,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:56:46,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:56:46,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038032928] [2020-10-27 22:56:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:56:46,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:56:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:56:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:56:46,885 INFO L87 Difference]: Start difference. First operand 44925 states and 58746 transitions. Second operand 13 states. [2020-10-27 22:56:47,744 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:56:47,995 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-27 22:56:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:56:56,675 INFO L93 Difference]: Finished difference Result 139817 states and 183423 transitions. [2020-10-27 22:56:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 22:56:56,676 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2020-10-27 22:56:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:56:57,270 INFO L225 Difference]: With dead ends: 139817 [2020-10-27 22:56:57,270 INFO L226 Difference]: Without dead ends: 95028 [2020-10-27 22:56:57,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=630, Invalid=3276, Unknown=0, NotChecked=0, Total=3906 [2020-10-27 22:56:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95028 states. [2020-10-27 22:57:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95028 to 89313. [2020-10-27 22:57:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89313 states. [2020-10-27 22:57:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89313 states to 89313 states and 116109 transitions. [2020-10-27 22:57:03,934 INFO L78 Accepts]: Start accepts. Automaton has 89313 states and 116109 transitions. Word has length 106 [2020-10-27 22:57:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:03,934 INFO L481 AbstractCegarLoop]: Abstraction has 89313 states and 116109 transitions. [2020-10-27 22:57:03,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:57:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 89313 states and 116109 transitions. [2020-10-27 22:57:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:57:03,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:03,942 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:57:03,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:57:03,943 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash 308865213, now seen corresponding path program 1 times [2020-10-27 22:57:03,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:03,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367853909] [2020-10-27 22:57:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:08,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:57:08,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:09,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:09,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:09,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:57:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:09,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:57:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:57:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:57:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:57:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:57:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:57:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:57:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 22:57:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:09,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:57:09,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:57:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:57:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:09,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:09,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:09,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:57:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:57:09,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367853909] [2020-10-27 22:57:09,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:09,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:57:09,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692603232] [2020-10-27 22:57:09,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:57:09,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:09,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:57:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:57:09,258 INFO L87 Difference]: Start difference. First operand 89313 states and 116109 transitions. Second operand 9 states. [2020-10-27 22:57:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:15,518 INFO L93 Difference]: Finished difference Result 157688 states and 204303 transitions. [2020-10-27 22:57:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:57:15,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 22:57:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:16,042 INFO L225 Difference]: With dead ends: 157688 [2020-10-27 22:57:16,042 INFO L226 Difference]: Without dead ends: 68511 [2020-10-27 22:57:16,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:57:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68511 states. [2020-10-27 22:57:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68511 to 67847. [2020-10-27 22:57:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67847 states. [2020-10-27 22:57:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67847 states to 67847 states and 84756 transitions. [2020-10-27 22:57:21,211 INFO L78 Accepts]: Start accepts. Automaton has 67847 states and 84756 transitions. Word has length 106 [2020-10-27 22:57:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:21,211 INFO L481 AbstractCegarLoop]: Abstraction has 67847 states and 84756 transitions. [2020-10-27 22:57:21,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:57:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 67847 states and 84756 transitions. [2020-10-27 22:57:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:57:21,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:21,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:57:21,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:57:21,220 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:21,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1911786875, now seen corresponding path program 2 times [2020-10-27 22:57:21,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:21,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845184523] [2020-10-27 22:57:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:21,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:57:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:57:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:57:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:57:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:57:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:57:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:57:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:26,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:26,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:26,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:57:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:57:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:26,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:26,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:26,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:26,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:57:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:26,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:57:26,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:57:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:57:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:57:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:57:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:57:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:26,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:57:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:57:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:26,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:26,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:26,520 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 22:57:26,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845184523] [2020-10-27 22:57:26,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:26,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:57:26,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065296974] [2020-10-27 22:57:26,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:57:26,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:57:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:57:26,522 INFO L87 Difference]: Start difference. First operand 67847 states and 84756 transitions. Second operand 9 states. [2020-10-27 22:57:29,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:29,482 INFO L93 Difference]: Finished difference Result 67853 states and 84760 transitions. [2020-10-27 22:57:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:57:29,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-27 22:57:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:29,596 INFO L225 Difference]: With dead ends: 67853 [2020-10-27 22:57:29,596 INFO L226 Difference]: Without dead ends: 33741 [2020-10-27 22:57:29,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:57:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33741 states. [2020-10-27 22:57:32,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33741 to 33738. [2020-10-27 22:57:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33738 states. [2020-10-27 22:57:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33738 states to 33738 states and 42040 transitions. [2020-10-27 22:57:32,574 INFO L78 Accepts]: Start accepts. Automaton has 33738 states and 42040 transitions. Word has length 106 [2020-10-27 22:57:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:32,574 INFO L481 AbstractCegarLoop]: Abstraction has 33738 states and 42040 transitions. [2020-10-27 22:57:32,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:57:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 33738 states and 42040 transitions. [2020-10-27 22:57:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-27 22:57:32,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:32,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:57:32,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:57:32,580 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash 170583593, now seen corresponding path program 1 times [2020-10-27 22:57:32,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:32,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571799647] [2020-10-27 22:57:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:32,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:32,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 22:57:37,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:57:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 22:57:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:57:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 22:57:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 22:57:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:37,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:37,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:37,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:37,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:37,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:57:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:37,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:57:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:57:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:37,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:57:37,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:57:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:57:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:57:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:57:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:57:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 22:57:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:38,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 22:57:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:38,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 22:57:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:38,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:38,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:38,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:57:38,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571799647] [2020-10-27 22:57:38,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:38,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:57:38,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457314004] [2020-10-27 22:57:38,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:57:38,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:38,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:57:38,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:57:38,034 INFO L87 Difference]: Start difference. First operand 33738 states and 42040 transitions. Second operand 13 states. [2020-10-27 22:57:38,719 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-27 22:57:38,918 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 109 [2020-10-27 22:57:39,267 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 108 [2020-10-27 22:57:41,847 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 22:57:41,976 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-27 22:57:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:44,985 INFO L93 Difference]: Finished difference Result 78929 states and 98120 transitions. [2020-10-27 22:57:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 22:57:44,986 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2020-10-27 22:57:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:45,100 INFO L225 Difference]: With dead ends: 78929 [2020-10-27 22:57:45,101 INFO L226 Difference]: Without dead ends: 45275 [2020-10-27 22:57:45,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=481, Invalid=2489, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 22:57:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45275 states. [2020-10-27 22:57:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45275 to 42830. [2020-10-27 22:57:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42830 states. [2020-10-27 22:57:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42830 states to 42830 states and 52430 transitions. [2020-10-27 22:57:48,477 INFO L78 Accepts]: Start accepts. Automaton has 42830 states and 52430 transitions. Word has length 106 [2020-10-27 22:57:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:57:48,478 INFO L481 AbstractCegarLoop]: Abstraction has 42830 states and 52430 transitions. [2020-10-27 22:57:48,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:57:48,478 INFO L276 IsEmpty]: Start isEmpty. Operand 42830 states and 52430 transitions. [2020-10-27 22:57:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 22:57:48,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:57:48,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:57:48,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:57:48,484 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:57:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:57:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash 876109025, now seen corresponding path program 1 times [2020-10-27 22:57:48,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:57:48,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986851417] [2020-10-27 22:57:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:57:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 22:57:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 22:57:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 22:57:53,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:57:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:57:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 22:57:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:57:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:57:53,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:57:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:57:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:57:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:57:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:57:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 22:57:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 22:57:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:53,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:57:53,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:57:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:53,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 22:57:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:53,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:53,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:53,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 22:57:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 22:57:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:53,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:53,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 22:57:53,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 22:57:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:57:53,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:57:53,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:53,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 22:57:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:53,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:57:53,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:57:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 22:57:53,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:57:53,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 22:57:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:53,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:53,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:53,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 22:57:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 22:57:53,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:57:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:57:53,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:57:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:57:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 22:57:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:57:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:57:53,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:57:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 22:57:53,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986851417] [2020-10-27 22:57:53,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:57:53,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:57:53,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591800560] [2020-10-27 22:57:53,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:57:53,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:57:53,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:57:53,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:57:53,879 INFO L87 Difference]: Start difference. First operand 42830 states and 52430 transitions. Second operand 11 states. [2020-10-27 22:57:59,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:57:59,272 INFO L93 Difference]: Finished difference Result 95089 states and 116468 transitions. [2020-10-27 22:57:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 22:57:59,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-10-27 22:57:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:57:59,558 INFO L225 Difference]: With dead ends: 95089 [2020-10-27 22:57:59,559 INFO L226 Difference]: Without dead ends: 52361 [2020-10-27 22:57:59,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:57:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52361 states. [2020-10-27 22:58:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52361 to 48333. [2020-10-27 22:58:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48333 states. [2020-10-27 22:58:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48333 states to 48333 states and 58471 transitions. [2020-10-27 22:58:03,412 INFO L78 Accepts]: Start accepts. Automaton has 48333 states and 58471 transitions. Word has length 107 [2020-10-27 22:58:03,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:58:03,413 INFO L481 AbstractCegarLoop]: Abstraction has 48333 states and 58471 transitions. [2020-10-27 22:58:03,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:58:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 48333 states and 58471 transitions. [2020-10-27 22:58:03,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 22:58:03,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:58:03,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:58:03,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:58:03,417 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:58:03,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:58:03,417 INFO L82 PathProgramCache]: Analyzing trace with hash 636915253, now seen corresponding path program 1 times [2020-10-27 22:58:03,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:58:03,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439575457] [2020-10-27 22:58:03,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:58:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:58:03,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:03,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:58:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...