/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:57:40,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:57:40,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:57:40,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:57:40,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:57:40,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:57:40,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:57:40,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:57:40,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:57:40,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:57:40,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:57:40,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:57:40,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:57:40,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:57:40,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:57:40,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:57:40,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:57:40,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:57:40,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:57:40,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:57:40,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:57:40,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:57:40,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:57:40,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:57:40,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:57:40,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:57:40,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:57:40,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:57:40,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:57:40,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:57:40,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:57:40,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:57:40,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:57:40,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:57:40,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:57:40,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:57:40,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:57:40,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:57:40,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:57:40,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:57:40,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:57:40,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:57:40,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:57:40,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:57:40,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:57:40,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:57:40,228 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:57:40,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:57:40,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:57:40,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:57:40,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:57:40,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:57:40,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:57:40,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:57:40,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:57:40,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:57:40,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:57:40,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:57:40,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:57:40,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:57:40,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:57:40,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:57:40,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:57:40,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:57:40,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:57:40,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:57:40,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:57:40,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:57:40,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:57:40,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:57:40,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:57:40,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:57:40,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:57:40,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:57:40,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:57:40,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:57:40,769 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:57:40,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-28 17:57:40,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3a0b8bca/5c438a39b7954d76ba7141cb4f21853b/FLAG0f6b9b151 [2020-10-28 17:57:41,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:57:41,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-28 17:57:41,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3a0b8bca/5c438a39b7954d76ba7141cb4f21853b/FLAG0f6b9b151 [2020-10-28 17:57:41,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3a0b8bca/5c438a39b7954d76ba7141cb4f21853b [2020-10-28 17:57:41,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:57:41,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:57:41,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:57:41,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:57:41,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:57:41,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:57:41" (1/1) ... [2020-10-28 17:57:41,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22593138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:41, skipping insertion in model container [2020-10-28 17:57:41,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:57:41" (1/1) ... [2020-10-28 17:57:41,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:57:42,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:57:42,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:57:42,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:57:42,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:57:42,393 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:57:42,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42 WrapperNode [2020-10-28 17:57:42,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:57:42,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:57:42,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:57:42,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:57:42,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... [2020-10-28 17:57:42,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:57:42,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:57:42,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:57:42,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:57:42,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:57:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:57:42,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:57:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:57:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:57:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:57:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:57:42,566 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:57:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:57:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:57:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:57:42,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:57:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:57:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:57:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:57:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:57:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:57:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:57:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:57:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:57:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:57:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:57:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:57:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:57:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:57:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:57:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:57:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:57:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:57:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:57:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:57:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:57:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:57:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:57:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:57:43,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:57:43,713 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:57:43,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:57:43 BoogieIcfgContainer [2020-10-28 17:57:43,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:57:43,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:57:43,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:57:43,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:57:43,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:57:41" (1/3) ... [2020-10-28 17:57:43,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686ebfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:57:43, skipping insertion in model container [2020-10-28 17:57:43,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:57:42" (2/3) ... [2020-10-28 17:57:43,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686ebfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:57:43, skipping insertion in model container [2020-10-28 17:57:43,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:57:43" (3/3) ... [2020-10-28 17:57:43,735 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-28 17:57:43,752 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:57:43,757 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:57:43,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:57:43,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:57:43,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:57:43,822 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:57:43,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:57:43,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:57:43,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:57:43,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:57:43,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:57:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-28 17:57:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:57:43,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:43,870 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] [2020-10-28 17:57:43,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:43,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1255270413, now seen corresponding path program 1 times [2020-10-28 17:57:43,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:43,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992907459] [2020-10-28 17:57:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:44,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:44,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:44,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:57:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-28 17:57:44,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:44,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:57:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 17:57:45,131 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:45,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:57:45,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:45,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:57:45,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:57:45,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:45,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:57:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:45,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:57:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:57:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:45,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:45,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:57:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:45,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:45,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:45,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:57:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:45,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:45,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:45,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:45,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:45,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:45,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:45,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:45,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:45,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:45,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:45,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992907459] [2020-10-28 17:57:45,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:45,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:57:45,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576312016] [2020-10-28 17:57:45,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:57:45,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:57:45,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:57:45,492 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-28 17:57:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:46,983 INFO L93 Difference]: Finished difference Result 307 states and 486 transitions. [2020-10-28 17:57:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:57:46,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 17:57:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:47,002 INFO L225 Difference]: With dead ends: 307 [2020-10-28 17:57:47,002 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 17:57:47,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 17:57:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-28 17:57:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 17:57:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 280 transitions. [2020-10-28 17:57:47,089 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 280 transitions. Word has length 66 [2020-10-28 17:57:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:47,090 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 280 transitions. [2020-10-28 17:57:47,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:57:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 280 transitions. [2020-10-28 17:57:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:57:47,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:47,095 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] [2020-10-28 17:57:47,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:57:47,096 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1194329717, now seen corresponding path program 1 times [2020-10-28 17:57:47,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:47,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890086210] [2020-10-28 17:57:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:57:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-28 17:57:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:47,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:57:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:57:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:57:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:48,385 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:48,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:57:48,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:57:48,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 17:57:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:57:48,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:57:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:48,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:48,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:57:48,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:57:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:57:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:57:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:48,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:48,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:57:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:48,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:48,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:57:48,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:48,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:48,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:48,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:48,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:48,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:57:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:48,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890086210] [2020-10-28 17:57:48,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:48,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:57:48,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815522926] [2020-10-28 17:57:48,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:57:48,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:48,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:57:48,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:57:48,878 INFO L87 Difference]: Start difference. First operand 175 states and 280 transitions. Second operand 12 states. [2020-10-28 17:57:49,571 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:57:49,887 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:57:50,249 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:50,544 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:52,326 INFO L93 Difference]: Finished difference Result 302 states and 474 transitions. [2020-10-28 17:57:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:57:52,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-28 17:57:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:52,334 INFO L225 Difference]: With dead ends: 302 [2020-10-28 17:57:52,334 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 17:57:52,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 17:57:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-28 17:57:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 17:57:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2020-10-28 17:57:52,387 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 66 [2020-10-28 17:57:52,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:52,388 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2020-10-28 17:57:52,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:57:52,388 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2020-10-28 17:57:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:57:52,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:52,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:52,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:57:52,393 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash 120280502, now seen corresponding path program 1 times [2020-10-28 17:57:52,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:52,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047086855] [2020-10-28 17:57:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 17:57:57,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:57:57,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 17:57:57,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:57:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:57:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:57:57,765 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:57,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:57:57,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:57,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:57:57,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:57:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:57,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:57,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:57,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:57:57,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:57:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:58,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:58,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:57:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:58,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:58,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:57:58,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:58,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:58,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:58,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:57:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:57:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:58,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:58,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:58,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:58,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:58,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:58,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:58,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047086855] [2020-10-28 17:57:58,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:58,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:58,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353029769] [2020-10-28 17:57:58,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:58,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:58,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:58,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:58,148 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand 9 states. [2020-10-28 17:57:58,432 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:01,097 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:01,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:01,502 INFO L93 Difference]: Finished difference Result 423 states and 632 transitions. [2020-10-28 17:58:01,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:58:01,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-28 17:58:01,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:01,513 INFO L225 Difference]: With dead ends: 423 [2020-10-28 17:58:01,513 INFO L226 Difference]: Without dead ends: 320 [2020-10-28 17:58:01,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:58:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-28 17:58:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 277. [2020-10-28 17:58:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-28 17:58:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 409 transitions. [2020-10-28 17:58:01,578 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 409 transitions. Word has length 95 [2020-10-28 17:58:01,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:01,579 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 409 transitions. [2020-10-28 17:58:01,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 409 transitions. [2020-10-28 17:58:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 17:58:01,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:01,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:01,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:58:01,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1377958529, now seen corresponding path program 1 times [2020-10-28 17:58:01,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:01,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181025622] [2020-10-28 17:58:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:01,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:06,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:06,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 17:58:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:06,922 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:58:06,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:06,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:07,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:58:07,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:58:07,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:07,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:07,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:07,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:07,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:07,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:58:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:58:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:07,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:07,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:07,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:58:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:07,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:58:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:58:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:58:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:58:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:07,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:07,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:07,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:07,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:07,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:07,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:07,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181025622] [2020-10-28 17:58:07,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:07,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:07,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919636792] [2020-10-28 17:58:07,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:07,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:07,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:07,329 INFO L87 Difference]: Start difference. First operand 277 states and 409 transitions. Second operand 9 states. [2020-10-28 17:58:07,576 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:07,827 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:58:08,137 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:08,411 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:09,408 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:11,672 INFO L93 Difference]: Finished difference Result 862 states and 1284 transitions. [2020-10-28 17:58:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:58:11,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-28 17:58:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:11,678 INFO L225 Difference]: With dead ends: 862 [2020-10-28 17:58:11,678 INFO L226 Difference]: Without dead ends: 611 [2020-10-28 17:58:11,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:58:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-28 17:58:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 546. [2020-10-28 17:58:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-28 17:58:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 799 transitions. [2020-10-28 17:58:11,738 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 799 transitions. Word has length 97 [2020-10-28 17:58:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:11,738 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 799 transitions. [2020-10-28 17:58:11,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 799 transitions. [2020-10-28 17:58:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:58:11,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:11,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:11,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:58:11,743 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:11,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1285733905, now seen corresponding path program 1 times [2020-10-28 17:58:11,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:11,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114862150] [2020-10-28 17:58:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:11,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:12,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:58:16,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:58:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:58:16,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:16,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 17:58:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,071 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:17,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:17,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:58:17,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:17,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:17,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 17:58:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:58:17,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:17,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:17,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:17,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:17,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:58:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:17,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:17,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:17,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:58:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:17,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:58:17,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:58:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:58:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:58:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:17,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:17,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:17,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:17,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:17,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114862150] [2020-10-28 17:58:17,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:17,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:17,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50122034] [2020-10-28 17:58:17,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:17,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:17,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:17,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:17,445 INFO L87 Difference]: Start difference. First operand 546 states and 799 transitions. Second operand 9 states. [2020-10-28 17:58:17,707 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:17,989 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:58:18,370 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:58:18,887 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-28 17:58:19,798 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:22,831 INFO L93 Difference]: Finished difference Result 2099 states and 3076 transitions. [2020-10-28 17:58:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:58:22,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-28 17:58:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:22,843 INFO L225 Difference]: With dead ends: 2099 [2020-10-28 17:58:22,843 INFO L226 Difference]: Without dead ends: 1610 [2020-10-28 17:58:22,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:58:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-10-28 17:58:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1444. [2020-10-28 17:58:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-28 17:58:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2093 transitions. [2020-10-28 17:58:22,975 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2093 transitions. Word has length 98 [2020-10-28 17:58:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:22,975 INFO L481 AbstractCegarLoop]: Abstraction has 1444 states and 2093 transitions. [2020-10-28 17:58:22,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2093 transitions. [2020-10-28 17:58:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:58:22,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:22,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:22,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:58:22,980 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash -241381491, now seen corresponding path program 1 times [2020-10-28 17:58:22,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:22,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413506158] [2020-10-28 17:58:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:23,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:58:28,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 17:58:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,359 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:28,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:28,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:58:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:58:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 17:58:28,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:58:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:58:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:28,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:28,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:28,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:28,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:28,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:58:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:28,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:58:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:28,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:58:28,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:58:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:58:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:28,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:28,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:28,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:28,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:28,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:58:28,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:28,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:58:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:29,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:29,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:29,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413506158] [2020-10-28 17:58:29,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:29,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:29,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929355144] [2020-10-28 17:58:29,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:29,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:29,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:29,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:29,040 INFO L87 Difference]: Start difference. First operand 1444 states and 2093 transitions. Second operand 9 states. [2020-10-28 17:58:29,268 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:31,552 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:58:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:31,965 INFO L93 Difference]: Finished difference Result 3801 states and 5679 transitions. [2020-10-28 17:58:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:58:31,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-28 17:58:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:31,987 INFO L225 Difference]: With dead ends: 3801 [2020-10-28 17:58:31,987 INFO L226 Difference]: Without dead ends: 2790 [2020-10-28 17:58:31,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:58:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2020-10-28 17:58:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2453. [2020-10-28 17:58:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2453 states. [2020-10-28 17:58:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3619 transitions. [2020-10-28 17:58:32,226 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3619 transitions. Word has length 99 [2020-10-28 17:58:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:32,228 INFO L481 AbstractCegarLoop]: Abstraction has 2453 states and 3619 transitions. [2020-10-28 17:58:32,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3619 transitions. [2020-10-28 17:58:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:58:32,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:32,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:32,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:58:32,235 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:32,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1332767394, now seen corresponding path program 1 times [2020-10-28 17:58:32,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:32,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144683036] [2020-10-28 17:58:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:37,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 17:58:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,532 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:37,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:37,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:58:37,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:37,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:58:37,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:38,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:58:38,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:58:38,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-28 17:58:38,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:38,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:58:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:58:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:38,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:38,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:38,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:38,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:38,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:58:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:38,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:38,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:38,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:58:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:38,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:38,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:58:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:58:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:38,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:38,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:58:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:58:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:38,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144683036] [2020-10-28 17:58:38,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:38,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:58:38,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117760974] [2020-10-28 17:58:38,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:58:38,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:38,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:58:38,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:58:38,458 INFO L87 Difference]: Start difference. First operand 2453 states and 3619 transitions. Second operand 10 states. [2020-10-28 17:58:38,725 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:39,083 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:39,553 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:39,860 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:58:40,195 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:58:40,465 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:58:40,793 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:58:41,094 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:58:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:46,167 INFO L93 Difference]: Finished difference Result 7064 states and 10356 transitions. [2020-10-28 17:58:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:58:46,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-28 17:58:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:46,195 INFO L225 Difference]: With dead ends: 7064 [2020-10-28 17:58:46,195 INFO L226 Difference]: Without dead ends: 4475 [2020-10-28 17:58:46,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:58:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2020-10-28 17:58:46,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4018. [2020-10-28 17:58:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4018 states. [2020-10-28 17:58:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 5811 transitions. [2020-10-28 17:58:46,532 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 5811 transitions. Word has length 101 [2020-10-28 17:58:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:46,532 INFO L481 AbstractCegarLoop]: Abstraction has 4018 states and 5811 transitions. [2020-10-28 17:58:46,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:58:46,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 5811 transitions. [2020-10-28 17:58:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:58:46,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:46,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:46,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:58:46,540 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:46,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:46,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1802677285, now seen corresponding path program 1 times [2020-10-28 17:58:46,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:46,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500217227] [2020-10-28 17:58:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:48,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 17:58:51,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:51,857 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:51,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:51,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:51,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:51,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:51,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:51,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:51,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:51,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:51,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:51,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:58:51,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:51,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:58:51,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:51,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:58:51,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:58:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:52,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:52,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:52,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:52,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:52,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:58:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:52,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:52,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:58:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:52,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:52,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:52,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:52,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:58:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:52,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:58:52,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:58:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:58:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:52,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:52,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:58:52,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:52,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:52,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:58:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:52,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:52,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:52,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:52,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:52,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:52,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:52,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:52,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:52,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:52,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:52,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500217227] [2020-10-28 17:58:52,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:52,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:52,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686944710] [2020-10-28 17:58:52,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:52,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:52,238 INFO L87 Difference]: Start difference. First operand 4018 states and 5811 transitions. Second operand 9 states. [2020-10-28 17:58:52,514 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:52,813 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:58:53,187 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:58:53,742 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:58:54,764 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:58,148 INFO L93 Difference]: Finished difference Result 6605 states and 9541 transitions. [2020-10-28 17:58:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:58:58,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-28 17:58:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:58,175 INFO L225 Difference]: With dead ends: 6605 [2020-10-28 17:58:58,176 INFO L226 Difference]: Without dead ends: 4998 [2020-10-28 17:58:58,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:58:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2020-10-28 17:58:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4476. [2020-10-28 17:58:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4476 states. [2020-10-28 17:58:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6456 transitions. [2020-10-28 17:58:58,514 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6456 transitions. Word has length 101 [2020-10-28 17:58:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:58,514 INFO L481 AbstractCegarLoop]: Abstraction has 4476 states and 6456 transitions. [2020-10-28 17:58:58,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6456 transitions. [2020-10-28 17:58:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:58:58,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:58,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:58,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:58:58,522 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:58,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1227738431, now seen corresponding path program 1 times [2020-10-28 17:58:58,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:58,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516389137] [2020-10-28 17:58:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:03,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:03,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:59:03,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:59:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 17:59:03,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:03,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:03,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 17:59:03,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:03,950 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:03,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:03,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:03,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:59:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:03,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:59:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:59:04,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 17:59:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:04,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:04,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:59:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:59:04,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:59:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:04,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:04,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:04,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:04,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:04,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:04,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:04,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:04,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:59:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:04,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:59:04,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:04,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:59:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:04,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:04,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:59:04,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:04,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:59:04,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:04,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:59:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:59:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:04,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:59:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:04,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:04,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:04,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:04,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:04,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:04,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:59:04,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:04,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:59:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:04,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:04,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:04,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:04,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:04,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516389137] [2020-10-28 17:59:04,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:04,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:04,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388890439] [2020-10-28 17:59:04,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:04,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:04,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:04,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:04,389 INFO L87 Difference]: Start difference. First operand 4476 states and 6456 transitions. Second operand 9 states. [2020-10-28 17:59:04,676 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:04,975 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:59:05,344 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:59:06,129 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:59:06,741 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 17:59:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:09,308 INFO L93 Difference]: Finished difference Result 12377 states and 18252 transitions. [2020-10-28 17:59:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:59:09,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-28 17:59:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:09,356 INFO L225 Difference]: With dead ends: 12377 [2020-10-28 17:59:09,357 INFO L226 Difference]: Without dead ends: 8963 [2020-10-28 17:59:09,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:59:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8963 states. [2020-10-28 17:59:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8963 to 8085. [2020-10-28 17:59:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8085 states. [2020-10-28 17:59:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 11630 transitions. [2020-10-28 17:59:10,068 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 11630 transitions. Word has length 102 [2020-10-28 17:59:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:10,069 INFO L481 AbstractCegarLoop]: Abstraction has 8085 states and 11630 transitions. [2020-10-28 17:59:10,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 11630 transitions. [2020-10-28 17:59:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:59:10,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:10,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:10,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:59:10,082 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:10,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1714405558, now seen corresponding path program 1 times [2020-10-28 17:59:10,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:10,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699964722] [2020-10-28 17:59:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:11,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:59:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:59:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:59:15,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:59:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 17:59:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:59:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,384 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:15,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:59:15,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:15,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:59:15,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:15,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 17:59:15,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:15,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:59:15,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:59:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:15,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:15,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:15,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:59:15,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:59:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:15,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:15,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:15,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:59:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:59:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:59:15,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:59:15,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:59:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:15,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:15,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:15,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:15,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:15,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:15,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:15,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:15,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699964722] [2020-10-28 17:59:15,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:15,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:15,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735572491] [2020-10-28 17:59:15,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:15,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:15,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:15,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:15,703 INFO L87 Difference]: Start difference. First operand 8085 states and 11630 transitions. Second operand 9 states. [2020-10-28 17:59:16,316 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:19,011 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:59:19,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:19,386 INFO L93 Difference]: Finished difference Result 17153 states and 25128 transitions. [2020-10-28 17:59:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:59:19,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:59:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:19,440 INFO L225 Difference]: With dead ends: 17153 [2020-10-28 17:59:19,440 INFO L226 Difference]: Without dead ends: 11304 [2020-10-28 17:59:19,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:59:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11304 states. [2020-10-28 17:59:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11304 to 10095. [2020-10-28 17:59:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10095 states. [2020-10-28 17:59:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10095 states to 10095 states and 14540 transitions. [2020-10-28 17:59:20,234 INFO L78 Accepts]: Start accepts. Automaton has 10095 states and 14540 transitions. Word has length 103 [2020-10-28 17:59:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:20,234 INFO L481 AbstractCegarLoop]: Abstraction has 10095 states and 14540 transitions. [2020-10-28 17:59:20,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:20,235 INFO L276 IsEmpty]: Start isEmpty. Operand 10095 states and 14540 transitions. [2020-10-28 17:59:20,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:59:20,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:20,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:20,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:59:20,254 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:20,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash -439189097, now seen corresponding path program 1 times [2020-10-28 17:59:20,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:20,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447550504] [2020-10-28 17:59:20,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:20,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:25,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 17:59:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,553 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:25,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:25,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:59:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:59:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:25,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:25,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:59:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:25,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:59:25,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:59:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:59:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:25,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:59:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:59:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:25,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:25,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:25,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:25,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:25,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447550504] [2020-10-28 17:59:25,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:25,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:59:25,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546147128] [2020-10-28 17:59:25,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:59:25,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:25,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:59:25,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:59:25,939 INFO L87 Difference]: Start difference. First operand 10095 states and 14540 transitions. Second operand 10 states. [2020-10-28 17:59:26,250 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:26,693 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:59:26,953 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:59:27,210 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:59:27,468 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:59:27,748 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:59:33,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:33,339 INFO L93 Difference]: Finished difference Result 25247 states and 36580 transitions. [2020-10-28 17:59:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:59:33,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-28 17:59:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:33,412 INFO L225 Difference]: With dead ends: 25247 [2020-10-28 17:59:33,412 INFO L226 Difference]: Without dead ends: 15153 [2020-10-28 17:59:33,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:59:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2020-10-28 17:59:34,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 14054. [2020-10-28 17:59:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14054 states. [2020-10-28 17:59:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 20064 transitions. [2020-10-28 17:59:34,481 INFO L78 Accepts]: Start accepts. Automaton has 14054 states and 20064 transitions. Word has length 104 [2020-10-28 17:59:34,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:34,481 INFO L481 AbstractCegarLoop]: Abstraction has 14054 states and 20064 transitions. [2020-10-28 17:59:34,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:59:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 14054 states and 20064 transitions. [2020-10-28 17:59:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 17:59:34,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:34,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:34,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:59:34,499 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:34,499 INFO L82 PathProgramCache]: Analyzing trace with hash -908390776, now seen corresponding path program 1 times [2020-10-28 17:59:34,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:34,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358003329] [2020-10-28 17:59:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:34,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:34,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:39,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:39,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 17:59:39,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:39,795 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:39,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:39,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:39,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:39,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:39,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:39,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:39,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:39,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:59:39,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:59:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:59:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:39,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:39,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:39,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:39,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:59:39,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:39,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:59:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:40,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:40,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:59:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:59:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:40,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:40,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:59:40,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:59:40,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:40,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:59:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:59:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:59:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:40,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:40,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:40,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358003329] [2020-10-28 17:59:40,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:40,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:40,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748195563] [2020-10-28 17:59:40,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:40,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:40,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:40,132 INFO L87 Difference]: Start difference. First operand 14054 states and 20064 transitions. Second operand 9 states. [2020-10-28 17:59:40,412 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:40,712 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:59:41,018 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:59:41,937 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:59:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:46,092 INFO L93 Difference]: Finished difference Result 21770 states and 30960 transitions. [2020-10-28 17:59:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:59:46,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-28 17:59:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:46,155 INFO L225 Difference]: With dead ends: 21770 [2020-10-28 17:59:46,156 INFO L226 Difference]: Without dead ends: 17676 [2020-10-28 17:59:46,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:59:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17676 states. [2020-10-28 17:59:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17676 to 16370. [2020-10-28 17:59:47,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16370 states. [2020-10-28 17:59:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16370 states to 16370 states and 23230 transitions. [2020-10-28 17:59:47,237 INFO L78 Accepts]: Start accepts. Automaton has 16370 states and 23230 transitions. Word has length 105 [2020-10-28 17:59:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:47,238 INFO L481 AbstractCegarLoop]: Abstraction has 16370 states and 23230 transitions. [2020-10-28 17:59:47,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 16370 states and 23230 transitions. [2020-10-28 17:59:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 17:59:47,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:47,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:47,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:59:47,264 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 314597888, now seen corresponding path program 1 times [2020-10-28 17:59:47,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:47,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918580119] [2020-10-28 17:59:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:47,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:49,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 17:59:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,549 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:52,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:59:52,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:59:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 17:59:52,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:59:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:59:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:59:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:59:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:52,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:59:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:59:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:59:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:59:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:59:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:52,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:59:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:59:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:52,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:59:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:59:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:59:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:52,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:52,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:59:52,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:52,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:52,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918580119] [2020-10-28 17:59:52,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:52,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:59:52,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875866521] [2020-10-28 17:59:52,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:59:52,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:52,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:59:52,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:59:52,976 INFO L87 Difference]: Start difference. First operand 16370 states and 23230 transitions. Second operand 10 states. [2020-10-28 17:59:53,243 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:53,650 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:59:54,054 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:59:54,356 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:59:54,662 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:59:54,973 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:00:00,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:00,029 INFO L93 Difference]: Finished difference Result 28050 states and 39507 transitions. [2020-10-28 18:00:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:00:00,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-28 18:00:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:00,112 INFO L225 Difference]: With dead ends: 28050 [2020-10-28 18:00:00,112 INFO L226 Difference]: Without dead ends: 22142 [2020-10-28 18:00:00,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 18:00:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22142 states. [2020-10-28 18:00:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22142 to 20292. [2020-10-28 18:00:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20292 states. [2020-10-28 18:00:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20292 states to 20292 states and 28758 transitions. [2020-10-28 18:00:01,468 INFO L78 Accepts]: Start accepts. Automaton has 20292 states and 28758 transitions. Word has length 105 [2020-10-28 18:00:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:01,468 INFO L481 AbstractCegarLoop]: Abstraction has 20292 states and 28758 transitions. [2020-10-28 18:00:01,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 18:00:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 20292 states and 28758 transitions. [2020-10-28 18:00:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 18:00:01,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:01,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:01,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:00:01,537 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:01,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:01,538 INFO L82 PathProgramCache]: Analyzing trace with hash -283672841, now seen corresponding path program 1 times [2020-10-28 18:00:01,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:01,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734226350] [2020-10-28 18:00:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 18:00:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:00:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2625 [2020-10-28 18:00:04,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 18:00:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 18:00:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,452 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:00:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 18:00:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:00:04,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:04,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:00:04,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 18:00:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:04,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:04,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 18:00:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:00:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:00:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 18:00:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 18:00:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:04,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 18:00:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 18:00:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:04,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:04,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:04,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:04,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:04,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:04,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:04,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:04,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734226350] [2020-10-28 18:00:04,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:04,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:00:04,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847476430] [2020-10-28 18:00:04,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 18:00:04,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:04,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 18:00:04,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:00:04,702 INFO L87 Difference]: Start difference. First operand 20292 states and 28758 transitions. Second operand 9 states. [2020-10-28 18:00:04,978 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:00:05,601 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 18:00:07,659 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 18:00:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:09,451 INFO L93 Difference]: Finished difference Result 47210 states and 67728 transitions. [2020-10-28 18:00:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 18:00:09,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-28 18:00:09,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:09,572 INFO L225 Difference]: With dead ends: 47210 [2020-10-28 18:00:09,573 INFO L226 Difference]: Without dead ends: 30470 [2020-10-28 18:00:09,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 18:00:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30470 states. [2020-10-28 18:00:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30470 to 27503. [2020-10-28 18:00:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27503 states. [2020-10-28 18:00:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27503 states to 27503 states and 37888 transitions. [2020-10-28 18:00:11,735 INFO L78 Accepts]: Start accepts. Automaton has 27503 states and 37888 transitions. Word has length 106 [2020-10-28 18:00:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:11,735 INFO L481 AbstractCegarLoop]: Abstraction has 27503 states and 37888 transitions. [2020-10-28 18:00:11,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 18:00:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 27503 states and 37888 transitions. [2020-10-28 18:00:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 18:00:11,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:11,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:11,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:00:11,758 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:11,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1375076388, now seen corresponding path program 1 times [2020-10-28 18:00:11,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:11,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763104529] [2020-10-28 18:00:11,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:12,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:12,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:15,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:16,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:00:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:00:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:00:16,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:16,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:16,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:00:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:00:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:00:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,044 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:00:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:17,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:17,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:17,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 18:00:17,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 18:00:17,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 18:00:17,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:00:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 18:00:17,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 18:00:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 18:00:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 18:00:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:00:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 18:00:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:00:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 18:00:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 18:00:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:17,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:00:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:00:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 18:00:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:17,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:17,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:17,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:17,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763104529] [2020-10-28 18:00:17,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:17,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:00:17,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295605214] [2020-10-28 18:00:17,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 18:00:17,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:17,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 18:00:17,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:00:17,450 INFO L87 Difference]: Start difference. First operand 27503 states and 37888 transitions. Second operand 10 states. [2020-10-28 18:00:17,746 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:00:18,093 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:00:18,406 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 18:00:18,941 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:00:19,275 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:00:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:24,941 INFO L93 Difference]: Finished difference Result 68455 states and 95840 transitions. [2020-10-28 18:00:24,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 18:00:24,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-10-28 18:00:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:25,112 INFO L225 Difference]: With dead ends: 68455 [2020-10-28 18:00:25,113 INFO L226 Difference]: Without dead ends: 42432 [2020-10-28 18:00:25,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-28 18:00:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42432 states. [2020-10-28 18:00:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42432 to 39868. [2020-10-28 18:00:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39868 states. [2020-10-28 18:00:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39868 states to 39868 states and 54520 transitions. [2020-10-28 18:00:28,336 INFO L78 Accepts]: Start accepts. Automaton has 39868 states and 54520 transitions. Word has length 108 [2020-10-28 18:00:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:28,336 INFO L481 AbstractCegarLoop]: Abstraction has 39868 states and 54520 transitions. [2020-10-28 18:00:28,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 18:00:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 39868 states and 54520 transitions. [2020-10-28 18:00:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 18:00:28,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:28,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:28,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:00:28,358 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:28,359 INFO L82 PathProgramCache]: Analyzing trace with hash 769893348, now seen corresponding path program 1 times [2020-10-28 18:00:28,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:28,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395169997] [2020-10-28 18:00:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:28,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:00:33,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 18:00:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,667 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:00:33,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:33,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 18:00:33,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:00:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 18:00:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 18:00:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:00:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:00:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 18:00:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:00:33,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 18:00:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 18:00:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:33,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:33,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395169997] [2020-10-28 18:00:33,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:33,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:00:33,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252595969] [2020-10-28 18:00:33,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 18:00:33,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 18:00:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:00:33,965 INFO L87 Difference]: Start difference. First operand 39868 states and 54520 transitions. Second operand 9 states. [2020-10-28 18:00:34,247 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:00:34,504 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:00:34,773 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:00:35,047 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:00:35,859 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:00:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:40,156 INFO L93 Difference]: Finished difference Result 77717 states and 106334 transitions. [2020-10-28 18:00:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 18:00:40,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-28 18:00:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:40,288 INFO L225 Difference]: With dead ends: 77717 [2020-10-28 18:00:40,288 INFO L226 Difference]: Without dead ends: 39049 [2020-10-28 18:00:40,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 18:00:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39049 states. [2020-10-28 18:00:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39049 to 36460. [2020-10-28 18:00:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36460 states. [2020-10-28 18:00:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36460 states to 36460 states and 49817 transitions. [2020-10-28 18:00:43,296 INFO L78 Accepts]: Start accepts. Automaton has 36460 states and 49817 transitions. Word has length 109 [2020-10-28 18:00:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:43,297 INFO L481 AbstractCegarLoop]: Abstraction has 36460 states and 49817 transitions. [2020-10-28 18:00:43,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 18:00:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 36460 states and 49817 transitions. [2020-10-28 18:00:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 18:00:43,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:43,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:43,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:00:43,311 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:43,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:43,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1806733913, now seen corresponding path program 1 times [2020-10-28 18:00:43,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:43,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887751374] [2020-10-28 18:00:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:43,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4129 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 18:00:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,734 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:00:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 18:00:47,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 18:00:47,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 18:00:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:47,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:47,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:00:47,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 18:00:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:47,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:00:47,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:00:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 18:00:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 18:00:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:00:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 18:00:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 18:00:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:00:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:47,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 18:00:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:47,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:48,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887751374] [2020-10-28 18:00:48,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:48,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:00:48,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194010892] [2020-10-28 18:00:48,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 18:00:48,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 18:00:48,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:00:48,022 INFO L87 Difference]: Start difference. First operand 36460 states and 49817 transitions. Second operand 9 states. [2020-10-28 18:00:48,644 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:00:52,003 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 18:00:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:00:53,955 INFO L93 Difference]: Finished difference Result 80343 states and 110605 transitions. [2020-10-28 18:00:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:00:53,956 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 110 [2020-10-28 18:00:53,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:00:54,154 INFO L225 Difference]: With dead ends: 80343 [2020-10-28 18:00:54,154 INFO L226 Difference]: Without dead ends: 51811 [2020-10-28 18:00:54,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:00:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51811 states. [2020-10-28 18:00:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51811 to 47728. [2020-10-28 18:00:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47728 states. [2020-10-28 18:00:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47728 states to 47728 states and 65045 transitions. [2020-10-28 18:00:57,895 INFO L78 Accepts]: Start accepts. Automaton has 47728 states and 65045 transitions. Word has length 110 [2020-10-28 18:00:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:00:57,896 INFO L481 AbstractCegarLoop]: Abstraction has 47728 states and 65045 transitions. [2020-10-28 18:00:57,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 18:00:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 47728 states and 65045 transitions. [2020-10-28 18:00:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 18:00:57,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:57,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:00:57,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:00:57,912 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash -641972092, now seen corresponding path program 1 times [2020-10-28 18:00:57,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:57,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751587843] [2020-10-28 18:00:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:58,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:02,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:02,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 18:01:02,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:01:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 18:01:02,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:02,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 18:01:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 18:01:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,238 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:01:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:03,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:01:03,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:03,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:03,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:03,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 18:01:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 18:01:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:03,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:01:03,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:03,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:01:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 18:01:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:01:03,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 18:01:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 18:01:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 18:01:03,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:01:03,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:01:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 18:01:03,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 18:01:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:01:03,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:01:03,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:01:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 18:01:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:03,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751587843] [2020-10-28 18:01:03,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:03,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 18:01:03,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337668371] [2020-10-28 18:01:03,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 18:01:03,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:03,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 18:01:03,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:01:03,529 INFO L87 Difference]: Start difference. First operand 47728 states and 65045 transitions. Second operand 9 states. [2020-10-28 18:01:03,825 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:01:06,267 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 194