/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:54:41,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:54:41,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:54:42,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:54:42,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:54:42,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:54:42,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:54:42,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:54:42,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:54:42,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:54:42,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:54:42,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:54:42,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:54:42,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:54:42,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:54:42,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:54:42,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:54:42,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:54:42,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:54:42,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:54:42,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:54:42,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:54:42,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:54:42,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:54:42,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:54:42,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:54:42,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:54:42,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:54:42,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:54:42,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:54:42,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:54:42,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:54:42,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:54:42,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:54:42,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:54:42,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:54:42,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:54:42,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:54:42,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:54:42,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:54:42,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:54:42,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:54:42,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:54:42,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:54:42,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:54:42,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:54:42,211 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:54:42,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:54:42,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:54:42,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:54:42,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:54:42,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:54:42,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:54:42,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:54:42,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:54:42,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:54:42,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:54:42,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:54:42,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:54:42,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:54:42,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:54:42,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:54:42,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:54:42,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:54:42,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:54:42,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:54:42,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:54:42,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:54:42,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:54:42,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:54:42,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:54:42,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:54:42,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:54:42,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:54:42,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:54:42,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:54:42,679 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:54:42,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-29 13:54:42,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fc31a7f4/bc22d7c7af794c9aad3d1cbf948aa401/FLAGd3e7071fd [2020-10-29 13:54:43,604 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:54:43,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-29 13:54:43,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fc31a7f4/bc22d7c7af794c9aad3d1cbf948aa401/FLAGd3e7071fd [2020-10-29 13:54:43,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fc31a7f4/bc22d7c7af794c9aad3d1cbf948aa401 [2020-10-29 13:54:43,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:54:43,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:54:43,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:54:43,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:54:43,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:54:43,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:54:43" (1/1) ... [2020-10-29 13:54:43,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d3f98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:43, skipping insertion in model container [2020-10-29 13:54:43,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:54:43" (1/1) ... [2020-10-29 13:54:43,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:54:43,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:54:44,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:54:44,818 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:54:44,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:54:44,994 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:54:44,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44 WrapperNode [2020-10-29 13:54:44,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:54:45,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:54:45,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:54:45,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:54:45,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... [2020-10-29 13:54:45,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:54:45,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:54:45,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:54:45,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:54:45,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:54:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:54:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:54:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:54:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:54:45,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:54:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:54:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:54:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:54:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:54:45,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:54:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:54:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:54:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:54:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:54:45,233 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:54:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:54:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:54:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:54:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:54:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:54:45,234 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:54:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:54:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:54:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:54:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:54:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:54:45,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:54:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:54:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:54:45,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:54:47,098 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:54:47,099 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:54:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:54:47 BoogieIcfgContainer [2020-10-29 13:54:47,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:54:47,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:54:47,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:54:47,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:54:47,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:54:43" (1/3) ... [2020-10-29 13:54:47,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d383f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:54:47, skipping insertion in model container [2020-10-29 13:54:47,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:54:44" (2/3) ... [2020-10-29 13:54:47,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d383f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:54:47, skipping insertion in model container [2020-10-29 13:54:47,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:54:47" (3/3) ... [2020-10-29 13:54:47,112 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-29 13:54:47,126 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:54:47,133 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:54:47,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:54:47,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:54:47,182 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:54:47,183 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:54:47,183 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:54:47,183 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:54:47,183 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:54:47,183 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:54:47,184 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:54:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states. [2020-10-29 13:54:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 13:54:47,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:47,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:54:47,239 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1168853078, now seen corresponding path program 1 times [2020-10-29 13:54:47,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:47,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244263780] [2020-10-29 13:54:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:47,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:49,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:52,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 13:54:52,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:54:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:54:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:52,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:54:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 13:54:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 13:54:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:54:53,165 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:54:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:53,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:53,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:54:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:53,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:54:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:54:53,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244263780] [2020-10-29 13:54:53,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:53,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:54:53,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095553645] [2020-10-29 13:54:53,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:54:53,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:53,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:54:53,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:54:53,354 INFO L87 Difference]: Start difference. First operand 496 states. Second operand 4 states. [2020-10-29 13:54:53,806 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:54:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:58,442 INFO L93 Difference]: Finished difference Result 1239 states and 2002 transitions. [2020-10-29 13:54:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:54:58,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-29 13:54:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:58,467 INFO L225 Difference]: With dead ends: 1239 [2020-10-29 13:54:58,467 INFO L226 Difference]: Without dead ends: 901 [2020-10-29 13:54:58,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:54:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-10-29 13:54:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 880. [2020-10-29 13:54:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-10-29 13:54:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1418 transitions. [2020-10-29 13:54:58,636 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1418 transitions. Word has length 124 [2020-10-29 13:54:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:58,637 INFO L481 AbstractCegarLoop]: Abstraction has 880 states and 1418 transitions. [2020-10-29 13:54:58,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:54:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1418 transitions. [2020-10-29 13:54:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 13:54:58,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:58,649 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:54:58,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:54:58,650 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:58,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1186556213, now seen corresponding path program 1 times [2020-10-29 13:54:58,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:58,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051811081] [2020-10-29 13:54:58,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:03,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 13:55:03,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:55:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:55:03,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:03,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:55:03,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 13:55:03,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:04,178 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:04,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:04,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:04,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:04,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:04,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:55:04,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:04,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:04,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051811081] [2020-10-29 13:55:04,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:04,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:55:04,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941972367] [2020-10-29 13:55:04,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:55:04,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:55:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:55:04,294 INFO L87 Difference]: Start difference. First operand 880 states and 1418 transitions. Second operand 4 states. [2020-10-29 13:55:04,704 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:55:07,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:07,536 INFO L93 Difference]: Finished difference Result 2145 states and 3433 transitions. [2020-10-29 13:55:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:55:07,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-29 13:55:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:07,548 INFO L225 Difference]: With dead ends: 2145 [2020-10-29 13:55:07,548 INFO L226 Difference]: Without dead ends: 1596 [2020-10-29 13:55:07,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2020-10-29 13:55:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1527. [2020-10-29 13:55:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2020-10-29 13:55:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2445 transitions. [2020-10-29 13:55:07,634 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2445 transitions. Word has length 124 [2020-10-29 13:55:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:07,635 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2445 transitions. [2020-10-29 13:55:07,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:55:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2445 transitions. [2020-10-29 13:55:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 13:55:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:07,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:07,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:55:07,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:07,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1945128131, now seen corresponding path program 1 times [2020-10-29 13:55:07,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:07,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113179047] [2020-10-29 13:55:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:07,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:08,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:12,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:12,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 13:55:12,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:55:12,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:55:12,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:12,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 13:55:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:55:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:13,178 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:13,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:13,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:13,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:13,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:55:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:13,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:13,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113179047] [2020-10-29 13:55:13,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:13,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:55:13,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020218266] [2020-10-29 13:55:13,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:55:13,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:55:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:55:13,258 INFO L87 Difference]: Start difference. First operand 1527 states and 2445 transitions. Second operand 4 states. [2020-10-29 13:55:13,673 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:55:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:16,762 INFO L93 Difference]: Finished difference Result 3747 states and 5969 transitions. [2020-10-29 13:55:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:55:16,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2020-10-29 13:55:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:16,783 INFO L225 Difference]: With dead ends: 3747 [2020-10-29 13:55:16,784 INFO L226 Difference]: Without dead ends: 2788 [2020-10-29 13:55:16,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2020-10-29 13:55:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2653. [2020-10-29 13:55:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2653 states. [2020-10-29 13:55:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4221 transitions. [2020-10-29 13:55:16,942 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4221 transitions. Word has length 126 [2020-10-29 13:55:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:16,943 INFO L481 AbstractCegarLoop]: Abstraction has 2653 states and 4221 transitions. [2020-10-29 13:55:16,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:55:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4221 transitions. [2020-10-29 13:55:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 13:55:16,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:16,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:16,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:55:16,952 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:16,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash -806561907, now seen corresponding path program 1 times [2020-10-29 13:55:16,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:16,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013214931] [2020-10-29 13:55:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:17,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:20,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:21,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:21,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 13:55:21,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:55:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:55:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:21,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 13:55:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:55:21,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:22,678 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:22,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:22,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:22,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:22,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:22,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:55:22,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:22,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:22,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:55:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:22,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013214931] [2020-10-29 13:55:22,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:22,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:55:22,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752686284] [2020-10-29 13:55:22,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:55:22,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:55:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:55:22,783 INFO L87 Difference]: Start difference. First operand 2653 states and 4221 transitions. Second operand 4 states. [2020-10-29 13:55:23,212 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:55:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:26,481 INFO L93 Difference]: Finished difference Result 6479 states and 10261 transitions. [2020-10-29 13:55:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:55:26,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-29 13:55:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:26,509 INFO L225 Difference]: With dead ends: 6479 [2020-10-29 13:55:26,509 INFO L226 Difference]: Without dead ends: 4836 [2020-10-29 13:55:26,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2020-10-29 13:55:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4569. [2020-10-29 13:55:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4569 states. [2020-10-29 13:55:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 7217 transitions. [2020-10-29 13:55:26,760 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 7217 transitions. Word has length 128 [2020-10-29 13:55:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:26,760 INFO L481 AbstractCegarLoop]: Abstraction has 4569 states and 7217 transitions. [2020-10-29 13:55:26,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:55:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 7217 transitions. [2020-10-29 13:55:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 13:55:26,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:26,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:26,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:55:26,772 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:26,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:26,773 INFO L82 PathProgramCache]: Analyzing trace with hash 692675286, now seen corresponding path program 1 times [2020-10-29 13:55:26,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:26,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421757456] [2020-10-29 13:55:26,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:28,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:31,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:31,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 13:55:31,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:55:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:55:31,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:31,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-29 13:55:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:55:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:32,273 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:32,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:32,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:32,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:55:32,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:32,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:32,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:32,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421757456] [2020-10-29 13:55:32,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:32,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:55:32,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144708254] [2020-10-29 13:55:32,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:55:32,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:32,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:55:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:55:32,349 INFO L87 Difference]: Start difference. First operand 4569 states and 7217 transitions. Second operand 4 states. [2020-10-29 13:55:36,316 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:55:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:36,329 INFO L93 Difference]: Finished difference Result 7035 states and 11105 transitions. [2020-10-29 13:55:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:55:36,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-29 13:55:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:36,351 INFO L225 Difference]: With dead ends: 7035 [2020-10-29 13:55:36,351 INFO L226 Difference]: Without dead ends: 4572 [2020-10-29 13:55:36,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2020-10-29 13:55:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 4569. [2020-10-29 13:55:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4569 states. [2020-10-29 13:55:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4569 states to 4569 states and 7193 transitions. [2020-10-29 13:55:36,582 INFO L78 Accepts]: Start accepts. Automaton has 4569 states and 7193 transitions. Word has length 130 [2020-10-29 13:55:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:36,583 INFO L481 AbstractCegarLoop]: Abstraction has 4569 states and 7193 transitions. [2020-10-29 13:55:36,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:55:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4569 states and 7193 transitions. [2020-10-29 13:55:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-29 13:55:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:36,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:36,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:55:36,599 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:36,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1056210077, now seen corresponding path program 1 times [2020-10-29 13:55:36,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:36,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795981510] [2020-10-29 13:55:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:40,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:41,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 13:55:41,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:55:41,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:42,080 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:42,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:42,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:42,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:42,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:42,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:55:42,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:42,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:42,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:42,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:42,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795981510] [2020-10-29 13:55:42,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:42,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:55:42,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342879582] [2020-10-29 13:55:42,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:55:42,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:55:42,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:55:42,148 INFO L87 Difference]: Start difference. First operand 4569 states and 7193 transitions. Second operand 4 states. [2020-10-29 13:55:42,595 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:55:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:45,580 INFO L93 Difference]: Finished difference Result 10999 states and 17221 transitions. [2020-10-29 13:55:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:55:45,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-29 13:55:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:45,615 INFO L225 Difference]: With dead ends: 10999 [2020-10-29 13:55:45,615 INFO L226 Difference]: Without dead ends: 8260 [2020-10-29 13:55:45,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2020-10-29 13:55:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 7729. [2020-10-29 13:55:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2020-10-29 13:55:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12049 transitions. [2020-10-29 13:55:46,077 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12049 transitions. Word has length 130 [2020-10-29 13:55:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:46,077 INFO L481 AbstractCegarLoop]: Abstraction has 7729 states and 12049 transitions. [2020-10-29 13:55:46,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:55:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12049 transitions. [2020-10-29 13:55:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 13:55:46,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:46,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:46,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:55:46,099 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1955762285, now seen corresponding path program 1 times [2020-10-29 13:55:46,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:46,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139827946] [2020-10-29 13:55:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:51,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:51,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 13:55:51,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:55:51,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:55:51,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:51,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:55:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:55:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 13:55:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:51,565 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:55:51,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:55:51,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:55:51,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139827946] [2020-10-29 13:55:51,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:51,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:55:51,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091971502] [2020-10-29 13:55:51,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:55:51,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:51,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:55:51,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:55:51,634 INFO L87 Difference]: Start difference. First operand 7729 states and 12049 transitions. Second operand 4 states. [2020-10-29 13:55:52,067 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-29 13:55:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:55,727 INFO L93 Difference]: Finished difference Result 21123 states and 32779 transitions. [2020-10-29 13:55:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:55:55,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-29 13:55:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:55,786 INFO L225 Difference]: With dead ends: 21123 [2020-10-29 13:55:55,786 INFO L226 Difference]: Without dead ends: 14880 [2020-10-29 13:55:55,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14880 states. [2020-10-29 13:55:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 13821. [2020-10-29 13:55:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-29 13:55:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21335 transitions. [2020-10-29 13:55:56,606 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21335 transitions. Word has length 132 [2020-10-29 13:55:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:56,606 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21335 transitions. [2020-10-29 13:55:56,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:55:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21335 transitions. [2020-10-29 13:55:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 13:55:56,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:56,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:55:56,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:55:56,644 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1320964170, now seen corresponding path program 1 times [2020-10-29 13:55:56,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:56,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818629228] [2020-10-29 13:55:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:56,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:01,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:01,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 13:56:01,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:56:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:56:01,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:01,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 13:56:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:56:01,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:02,104 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:02,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:02,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:02,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:02,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:02,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:56:02,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:02,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:02,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:02,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:02,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818629228] [2020-10-29 13:56:02,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:02,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:56:02,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704713682] [2020-10-29 13:56:02,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:56:02,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:56:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:56:02,172 INFO L87 Difference]: Start difference. First operand 13821 states and 21335 transitions. Second operand 4 states. [2020-10-29 13:56:06,519 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:56:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:06,528 INFO L93 Difference]: Finished difference Result 23539 states and 36315 transitions. [2020-10-29 13:56:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:56:06,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-29 13:56:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:06,566 INFO L225 Difference]: With dead ends: 23539 [2020-10-29 13:56:06,567 INFO L226 Difference]: Without dead ends: 13824 [2020-10-29 13:56:06,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:56:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13824 states. [2020-10-29 13:56:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13824 to 13821. [2020-10-29 13:56:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-29 13:56:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21239 transitions. [2020-10-29 13:56:07,440 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21239 transitions. Word has length 134 [2020-10-29 13:56:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:07,441 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21239 transitions. [2020-10-29 13:56:07,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:56:07,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21239 transitions. [2020-10-29 13:56:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 13:56:07,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:07,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:56:07,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:56:07,468 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:07,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:07,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1585251361, now seen corresponding path program 1 times [2020-10-29 13:56:07,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:07,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930014541] [2020-10-29 13:56:07,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:07,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:07,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:12,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:12,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 13:56:12,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:56:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 13:56:12,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:12,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:12,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:56:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 13:56:12,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 13:56:12,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:56:13,079 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:13,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:13,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:56:13,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:13,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:13,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:13,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930014541] [2020-10-29 13:56:13,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:13,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:56:13,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151410988] [2020-10-29 13:56:13,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:56:13,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:56:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:56:13,145 INFO L87 Difference]: Start difference. First operand 13821 states and 21239 transitions. Second operand 4 states. [2020-10-29 13:56:17,728 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:56:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:17,735 INFO L93 Difference]: Finished difference Result 23939 states and 36747 transitions. [2020-10-29 13:56:17,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:56:17,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-29 13:56:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:17,769 INFO L225 Difference]: With dead ends: 23939 [2020-10-29 13:56:17,769 INFO L226 Difference]: Without dead ends: 13824 [2020-10-29 13:56:17,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:56:17,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13824 states. [2020-10-29 13:56:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13824 to 13821. [2020-10-29 13:56:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-29 13:56:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21143 transitions. [2020-10-29 13:56:18,440 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21143 transitions. Word has length 134 [2020-10-29 13:56:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:18,441 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21143 transitions. [2020-10-29 13:56:18,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:56:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21143 transitions. [2020-10-29 13:56:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 13:56:18,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:18,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:56:18,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:56:18,463 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:18,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash 958393666, now seen corresponding path program 1 times [2020-10-29 13:56:18,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:18,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820225658] [2020-10-29 13:56:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:56:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:56:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:56:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:23,919 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:23,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:23,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:23,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820225658] [2020-10-29 13:56:23,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:23,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:56:23,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947465608] [2020-10-29 13:56:23,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:56:23,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:56:23,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:56:23,969 INFO L87 Difference]: Start difference. First operand 13821 states and 21143 transitions. Second operand 5 states. [2020-10-29 13:56:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:27,157 INFO L93 Difference]: Finished difference Result 27595 states and 42198 transitions. [2020-10-29 13:56:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:56:27,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 13:56:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:27,187 INFO L225 Difference]: With dead ends: 27595 [2020-10-29 13:56:27,187 INFO L226 Difference]: Without dead ends: 13821 [2020-10-29 13:56:27,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:56:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2020-10-29 13:56:27,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13821. [2020-10-29 13:56:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-29 13:56:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21102 transitions. [2020-10-29 13:56:27,909 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21102 transitions. Word has length 134 [2020-10-29 13:56:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:27,910 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21102 transitions. [2020-10-29 13:56:27,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:56:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21102 transitions. [2020-10-29 13:56:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 13:56:27,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:27,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:56:27,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:56:27,926 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash 212261610, now seen corresponding path program 1 times [2020-10-29 13:56:27,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:27,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757589685] [2020-10-29 13:56:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:28,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:32,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:56:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 13:56:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:33,478 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:33,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:33,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:33,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:33,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:33,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:56:33,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:33,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:33,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:33,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:33,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:33,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757589685] [2020-10-29 13:56:33,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:33,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:56:33,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215472562] [2020-10-29 13:56:33,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:56:33,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:56:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:56:33,757 INFO L87 Difference]: Start difference. First operand 13821 states and 21102 transitions. Second operand 9 states. [2020-10-29 13:56:44,415 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:56:44,818 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:56:45,220 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-29 13:56:45,681 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 13:56:46,298 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:56:46,784 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-29 13:56:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:56:46,807 INFO L93 Difference]: Finished difference Result 79773 states and 120230 transitions. [2020-10-29 13:56:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:56:46,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-29 13:56:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:56:46,921 INFO L225 Difference]: With dead ends: 79773 [2020-10-29 13:56:46,921 INFO L226 Difference]: Without dead ends: 69690 [2020-10-29 13:56:46,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:56:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69690 states. [2020-10-29 13:56:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69690 to 69675. [2020-10-29 13:56:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69675 states. [2020-10-29 13:56:51,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69675 states to 69675 states and 104698 transitions. [2020-10-29 13:56:51,068 INFO L78 Accepts]: Start accepts. Automaton has 69675 states and 104698 transitions. Word has length 174 [2020-10-29 13:56:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:51,069 INFO L481 AbstractCegarLoop]: Abstraction has 69675 states and 104698 transitions. [2020-10-29 13:56:51,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:56:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 69675 states and 104698 transitions. [2020-10-29 13:56:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 13:56:51,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:51,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:56:51,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:56:51,191 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:51,192 INFO L82 PathProgramCache]: Analyzing trace with hash -652803186, now seen corresponding path program 1 times [2020-10-29 13:56:51,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:51,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040556217] [2020-10-29 13:56:51,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:51,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:56,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 13:56:56,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:56:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:56:56,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:56,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:56:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:56:56,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:56:56,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:56,785 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:56:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:56,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:56,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:56,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:56:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:56,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:56:56,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040556217] [2020-10-29 13:56:56,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:56,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:56:56,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412207631] [2020-10-29 13:56:56,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:56:56,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:56,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:56:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:56:56,946 INFO L87 Difference]: Start difference. First operand 69675 states and 104698 transitions. Second operand 9 states. [2020-10-29 13:57:11,655 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:57:12,083 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:57:12,552 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-29 13:57:13,077 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 13:57:13,689 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:57:14,143 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-29 13:57:14,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:14,152 INFO L93 Difference]: Finished difference Result 168221 states and 251390 transitions. [2020-10-29 13:57:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:57:14,153 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-29 13:57:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:14,380 INFO L225 Difference]: With dead ends: 168221 [2020-10-29 13:57:14,380 INFO L226 Difference]: Without dead ends: 143930 [2020-10-29 13:57:14,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:57:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143930 states. [2020-10-29 13:57:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143930 to 143915. [2020-10-29 13:57:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143915 states. [2020-10-29 13:57:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143915 states to 143915 states and 214066 transitions. [2020-10-29 13:57:24,279 INFO L78 Accepts]: Start accepts. Automaton has 143915 states and 214066 transitions. Word has length 174 [2020-10-29 13:57:24,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:57:24,280 INFO L481 AbstractCegarLoop]: Abstraction has 143915 states and 214066 transitions. [2020-10-29 13:57:24,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:57:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 143915 states and 214066 transitions. [2020-10-29 13:57:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 13:57:24,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:57:24,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:57:24,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:57:24,779 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:57:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:57:24,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1295826253, now seen corresponding path program 1 times [2020-10-29 13:57:24,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:57:24,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646374383] [2020-10-29 13:57:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:57:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:29,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:29,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:57:29,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:57:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:30,453 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:57:30,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:57:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:57:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:57:30,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:57:30,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:57:30,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:57:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:57:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:57:30,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646374383] [2020-10-29 13:57:30,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:57:30,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:57:30,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136142069] [2020-10-29 13:57:30,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:57:30,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:57:30,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:57:30,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:57:30,635 INFO L87 Difference]: Start difference. First operand 143915 states and 214066 transitions. Second operand 9 states. [2020-10-29 13:57:48,486 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-29 13:57:48,945 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-29 13:57:49,411 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-29 13:57:49,923 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 13:57:50,523 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-29 13:57:51,026 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-29 13:57:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:57:51,035 INFO L93 Difference]: Finished difference Result 206773 states and 307210 transitions. [2020-10-29 13:57:51,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:57:51,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-10-29 13:57:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:57:51,463 INFO L225 Difference]: With dead ends: 206773 [2020-10-29 13:57:51,463 INFO L226 Difference]: Without dead ends: 171386 [2020-10-29 13:57:51,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:57:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171386 states. [2020-10-29 13:58:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171386 to 141719. [2020-10-29 13:58:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141719 states. [2020-10-29 13:58:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141719 states to 141719 states and 210766 transitions. [2020-10-29 13:58:01,742 INFO L78 Accepts]: Start accepts. Automaton has 141719 states and 210766 transitions. Word has length 174 [2020-10-29 13:58:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:01,743 INFO L481 AbstractCegarLoop]: Abstraction has 141719 states and 210766 transitions. [2020-10-29 13:58:01,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:58:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 141719 states and 210766 transitions. [2020-10-29 13:58:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 13:58:01,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:01,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:01,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:58:01,900 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:01,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:01,900 INFO L82 PathProgramCache]: Analyzing trace with hash 63147548, now seen corresponding path program 1 times [2020-10-29 13:58:01,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:01,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997611773] [2020-10-29 13:58:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:01,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:03,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:58:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 13:58:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:07,489 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-29 13:58:07,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:07,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:07,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:07,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997611773] [2020-10-29 13:58:07,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:07,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:58:07,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659822311] [2020-10-29 13:58:07,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:58:07,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:07,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:58:07,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:58:07,643 INFO L87 Difference]: Start difference. First operand 141719 states and 210766 transitions. Second operand 9 states.