/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 15:24:13,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 15:24:13,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 15:24:13,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-12 15:24:13,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-12 15:24:13,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-12 15:24:13,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-12 15:24:13,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-12 15:24:13,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-12 15:24:13,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-12 15:24:13,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-12 15:24:13,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-12 15:24:13,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 15:24:13,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 15:24:13,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 15:24:13,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 15:24:13,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 15:24:13,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 15:24:13,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 15:24:13,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 15:24:13,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 15:24:13,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 15:24:13,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 15:24:13,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 15:24:13,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 15:24:13,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 15:24:13,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 15:24:13,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 15:24:13,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 15:24:13,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 15:24:13,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 15:24:13,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 15:24:13,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 15:24:13,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 15:24:13,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 15:24:13,213 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 15:24:13,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 15:24:13,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 15:24:13,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 15:24:13,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 15:24:13,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 15:24:13,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 15:24:13,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 15:24:13,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 15:24:13,214 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 15:24:13,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 15:24:13,214 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 15:24:13,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 15:24:13,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 15:24:13,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 15:24:13,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 15:24:13,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 15:24:13,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 15:24:13,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 15:24:13,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 15:24:13,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 15:24:13,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 15:24:13,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 15:24:13,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 15:24:13,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 15:24:13,216 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 15:24:13,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 15:24:13,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 15:24:13,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 15:24:13,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 15:24:13,535 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 15:24:13,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2021-06-12 15:24:13,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ccc4ba4/dd706771363547feb5acc4f2a6b1faca/FLAG023320741 [2021-06-12 15:24:14,147 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 15:24:14,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2021-06-12 15:24:14,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ccc4ba4/dd706771363547feb5acc4f2a6b1faca/FLAG023320741 [2021-06-12 15:24:14,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ccc4ba4/dd706771363547feb5acc4f2a6b1faca [2021-06-12 15:24:14,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 15:24:14,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 15:24:14,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 15:24:14,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 15:24:14,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 15:24:14,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:24:14" (1/1) ... [2021-06-12 15:24:14,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@864cd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:14, skipping insertion in model container [2021-06-12 15:24:14,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:24:14" (1/1) ... [2021-06-12 15:24:14,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 15:24:14,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 15:24:14,950 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i[41530,41543] [2021-06-12 15:24:14,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:24:14,979 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 15:24:15,008 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i[41530,41543] [2021-06-12 15:24:15,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:24:15,167 INFO L208 MainTranslator]: Completed translation [2021-06-12 15:24:15,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15 WrapperNode [2021-06-12 15:24:15,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 15:24:15,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 15:24:15,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 15:24:15,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 15:24:15,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 15:24:15,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 15:24:15,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 15:24:15,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 15:24:15,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... [2021-06-12 15:24:15,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 15:24:15,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 15:24:15,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 15:24:15,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 15:24:15,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-06-12 15:24:15,351 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-12 15:24:15,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-12 15:24:15,352 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-12 15:24:15,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-12 15:24:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 15:24:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 15:24:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-12 15:24:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 15:24:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-12 15:24:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 15:24:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 15:24:15,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 15:24:15,355 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 15:24:15,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 15:24:15,865 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-06-12 15:24:15,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:24:15 BoogieIcfgContainer [2021-06-12 15:24:15,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 15:24:15,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 15:24:15,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 15:24:15,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 15:24:15,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 03:24:14" (1/3) ... [2021-06-12 15:24:15,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d89bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:24:15, skipping insertion in model container [2021-06-12 15:24:15,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:24:15" (2/3) ... [2021-06-12 15:24:15,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d89bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:24:15, skipping insertion in model container [2021-06-12 15:24:15,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:24:15" (3/3) ... [2021-06-12 15:24:15,873 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2021-06-12 15:24:15,877 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 15:24:15,877 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 15:24:15,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-12 15:24:15,878 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 15:24:15,906 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,906 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,906 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,906 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,907 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,908 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,909 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,910 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,911 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,911 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,911 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,911 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,911 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,911 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,912 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,912 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,912 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,912 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,912 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,912 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,913 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,914 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,915 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,916 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,917 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,917 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,917 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,917 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,917 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,917 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,918 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,919 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,920 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,921 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,922 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,923 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,924 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,925 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,926 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,927 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,927 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,927 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,928 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,929 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,930 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,931 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,931 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,931 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,931 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,931 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,931 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,932 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,933 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,934 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,935 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,936 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,936 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,936 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,936 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,936 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,936 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,937 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,937 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,937 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,937 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,937 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,937 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,938 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,939 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,940 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,941 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,942 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,942 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,942 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,942 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,942 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,942 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,943 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,955 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,955 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,956 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,957 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,957 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,957 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,957 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,957 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,957 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,959 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,959 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,959 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,959 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,960 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,961 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,961 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,965 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,966 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,967 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,967 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:24:15,976 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 15:24:15,991 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:24:16,004 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:24:16,005 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:24:16,005 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:24:16,005 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:24:16,005 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:24:16,005 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:24:16,005 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:24:16,005 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1Thread1of1ForFork1======== [2021-06-12 15:24:16,015 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 152 places, 157 transitions, 336 flow [2021-06-12 15:24:16,376 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9831 states, 9827 states have (on average 2.8614022590821206) internal successors, (28119), 9830 states have internal predecessors, (28119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 9831 states, 9827 states have (on average 2.8614022590821206) internal successors, (28119), 9830 states have internal predecessors, (28119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:16,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 15:24:16,468 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:16,469 INFO L472 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] [2021-06-12 15:24:16,469 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:16,474 INFO L82 PathProgramCache]: Analyzing trace with hash -58151633, now seen corresponding path program 1 times [2021-06-12 15:24:16,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:16,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543126321] [2021-06-12 15:24:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:16,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:16,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543126321] [2021-06-12 15:24:16,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543126321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:24:16,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:24:16,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:24:16,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701883418] [2021-06-12 15:24:16,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:24:16,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:16,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:24:16,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:24:16,828 INFO L87 Difference]: Start difference. First operand has 9831 states, 9827 states have (on average 2.8614022590821206) internal successors, (28119), 9830 states have internal predecessors, (28119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:17,031 INFO L93 Difference]: Finished difference Result 14511 states and 39963 transitions. [2021-06-12 15:24:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:24:17,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-12 15:24:17,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:17,121 INFO L225 Difference]: With dead ends: 14511 [2021-06-12 15:24:17,121 INFO L226 Difference]: Without dead ends: 12844 [2021-06-12 15:24:17,122 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:24:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12844 states. [2021-06-12 15:24:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12844 to 11431. [2021-06-12 15:24:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11429 states have (on average 2.7715460670224865) internal successors, (31676), 11430 states have internal predecessors, (31676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 31676 transitions. [2021-06-12 15:24:17,690 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 31676 transitions. Word has length 54 [2021-06-12 15:24:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:17,691 INFO L482 AbstractCegarLoop]: Abstraction has 11431 states and 31676 transitions. [2021-06-12 15:24:17,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 31676 transitions. [2021-06-12 15:24:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-06-12 15:24:17,713 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:17,714 INFO L472 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] [2021-06-12 15:24:17,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 15:24:17,714 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1737064523, now seen corresponding path program 1 times [2021-06-12 15:24:17,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:17,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753598771] [2021-06-12 15:24:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:17,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:17,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753598771] [2021-06-12 15:24:17,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753598771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:24:17,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:24:17,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:24:17,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699487350] [2021-06-12 15:24:17,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:24:17,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:17,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:24:17,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:24:17,847 INFO L87 Difference]: Start difference. First operand 11431 states and 31676 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:18,001 INFO L93 Difference]: Finished difference Result 15291 states and 42316 transitions. [2021-06-12 15:24:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-12 15:24:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-06-12 15:24:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:18,048 INFO L225 Difference]: With dead ends: 15291 [2021-06-12 15:24:18,048 INFO L226 Difference]: Without dead ends: 15291 [2021-06-12 15:24:18,049 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:24:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15291 states. [2021-06-12 15:24:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15291 to 12010. [2021-06-12 15:24:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12010 states, 12008 states have (on average 2.770819453697535) internal successors, (33272), 12009 states have internal predecessors, (33272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12010 states to 12010 states and 33272 transitions. [2021-06-12 15:24:18,429 INFO L78 Accepts]: Start accepts. Automaton has 12010 states and 33272 transitions. Word has length 63 [2021-06-12 15:24:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:18,429 INFO L482 AbstractCegarLoop]: Abstraction has 12010 states and 33272 transitions. [2021-06-12 15:24:18,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 12010 states and 33272 transitions. [2021-06-12 15:24:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-06-12 15:24:18,445 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:18,446 INFO L472 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] [2021-06-12 15:24:18,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 15:24:18,446 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:18,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:18,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1966231402, now seen corresponding path program 1 times [2021-06-12 15:24:18,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:18,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811482774] [2021-06-12 15:24:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:18,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:18,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811482774] [2021-06-12 15:24:18,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811482774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:24:18,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:24:18,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:24:18,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807344088] [2021-06-12 15:24:18,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:24:18,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:24:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:24:18,499 INFO L87 Difference]: Start difference. First operand 12010 states and 33272 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:18,549 INFO L93 Difference]: Finished difference Result 5338 states and 13928 transitions. [2021-06-12 15:24:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:24:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-06-12 15:24:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:18,561 INFO L225 Difference]: With dead ends: 5338 [2021-06-12 15:24:18,561 INFO L226 Difference]: Without dead ends: 5158 [2021-06-12 15:24:18,561 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:24:18,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2021-06-12 15:24:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5062. [2021-06-12 15:24:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5060 states have (on average 2.6104743083003954) internal successors, (13209), 5061 states have internal predecessors, (13209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 13209 transitions. [2021-06-12 15:24:18,764 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 13209 transitions. Word has length 80 [2021-06-12 15:24:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:18,765 INFO L482 AbstractCegarLoop]: Abstraction has 5062 states and 13209 transitions. [2021-06-12 15:24:18,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 13209 transitions. [2021-06-12 15:24:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-06-12 15:24:18,776 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:18,776 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:18,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 15:24:18,777 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:18,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1751726349, now seen corresponding path program 1 times [2021-06-12 15:24:18,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:18,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692709801] [2021-06-12 15:24:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:18,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:18,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692709801] [2021-06-12 15:24:18,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692709801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:18,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308877883] [2021-06-12 15:24:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:19,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 15:24:19,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:19,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308877883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:19,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:19,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-12 15:24:19,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467406366] [2021-06-12 15:24:19,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 15:24:19,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:19,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 15:24:19,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 15:24:19,375 INFO L87 Difference]: Start difference. First operand 5062 states and 13209 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:19,491 INFO L93 Difference]: Finished difference Result 7950 states and 20630 transitions. [2021-06-12 15:24:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 15:24:19,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-06-12 15:24:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:19,510 INFO L225 Difference]: With dead ends: 7950 [2021-06-12 15:24:19,511 INFO L226 Difference]: Without dead ends: 7950 [2021-06-12 15:24:19,511 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-12 15:24:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2021-06-12 15:24:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 7297. [2021-06-12 15:24:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7297 states, 7295 states have (on average 2.599451679232351) internal successors, (18963), 7296 states have internal predecessors, (18963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7297 states to 7297 states and 18963 transitions. [2021-06-12 15:24:19,722 INFO L78 Accepts]: Start accepts. Automaton has 7297 states and 18963 transitions. Word has length 89 [2021-06-12 15:24:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:19,722 INFO L482 AbstractCegarLoop]: Abstraction has 7297 states and 18963 transitions. [2021-06-12 15:24:19,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7297 states and 18963 transitions. [2021-06-12 15:24:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-12 15:24:19,738 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:19,738 INFO L472 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] [2021-06-12 15:24:19,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:19,961 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:19,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash 556490672, now seen corresponding path program 1 times [2021-06-12 15:24:19,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:19,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419860601] [2021-06-12 15:24:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:20,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:20,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419860601] [2021-06-12 15:24:20,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419860601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:24:20,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:24:20,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 15:24:20,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26284722] [2021-06-12 15:24:20,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 15:24:20,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:20,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 15:24:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:24:20,044 INFO L87 Difference]: Start difference. First operand 7297 states and 18963 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:20,151 INFO L93 Difference]: Finished difference Result 10552 states and 27328 transitions. [2021-06-12 15:24:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 15:24:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-12 15:24:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:20,173 INFO L225 Difference]: With dead ends: 10552 [2021-06-12 15:24:20,173 INFO L226 Difference]: Without dead ends: 10552 [2021-06-12 15:24:20,173 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-12 15:24:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10552 states. [2021-06-12 15:24:20,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10552 to 6645. [2021-06-12 15:24:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6645 states, 6643 states have (on average 2.577600481710071) internal successors, (17123), 6644 states have internal predecessors, (17123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6645 states to 6645 states and 17123 transitions. [2021-06-12 15:24:20,319 INFO L78 Accepts]: Start accepts. Automaton has 6645 states and 17123 transitions. Word has length 94 [2021-06-12 15:24:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:20,320 INFO L482 AbstractCegarLoop]: Abstraction has 6645 states and 17123 transitions. [2021-06-12 15:24:20,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6645 states and 17123 transitions. [2021-06-12 15:24:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-06-12 15:24:20,336 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:20,336 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:20,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 15:24:20,337 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:20,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1829261201, now seen corresponding path program 2 times [2021-06-12 15:24:20,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:20,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613507273] [2021-06-12 15:24:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:20,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:20,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613507273] [2021-06-12 15:24:20,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613507273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:20,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982596543] [2021-06-12 15:24:20,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:20,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:20,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:20,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:24:20,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:20,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982596543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:20,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:20,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-12 15:24:20,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885618931] [2021-06-12 15:24:20,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 15:24:20,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:20,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 15:24:20,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-12 15:24:20,916 INFO L87 Difference]: Start difference. First operand 6645 states and 17123 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:21,027 INFO L93 Difference]: Finished difference Result 9517 states and 24500 transitions. [2021-06-12 15:24:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 15:24:21,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-06-12 15:24:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:21,047 INFO L225 Difference]: With dead ends: 9517 [2021-06-12 15:24:21,047 INFO L226 Difference]: Without dead ends: 9517 [2021-06-12 15:24:21,048 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:24:21,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9517 states. [2021-06-12 15:24:21,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9517 to 8880. [2021-06-12 15:24:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8878 states have (on average 2.576819103401667) internal successors, (22877), 8879 states have internal predecessors, (22877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 22877 transitions. [2021-06-12 15:24:21,210 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 22877 transitions. Word has length 124 [2021-06-12 15:24:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:21,210 INFO L482 AbstractCegarLoop]: Abstraction has 8880 states and 22877 transitions. [2021-06-12 15:24:21,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 22877 transitions. [2021-06-12 15:24:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-06-12 15:24:21,227 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:21,227 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:21,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:21,451 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:21,452 INFO L82 PathProgramCache]: Analyzing trace with hash 449040744, now seen corresponding path program 1 times [2021-06-12 15:24:21,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:21,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703908592] [2021-06-12 15:24:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:21,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:21,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703908592] [2021-06-12 15:24:21,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703908592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:21,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774214774] [2021-06-12 15:24:21,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:21,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:24:21,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:21,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774214774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:21,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:21,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-06-12 15:24:21,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544395845] [2021-06-12 15:24:21,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 15:24:21,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:21,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 15:24:21,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-12 15:24:21,949 INFO L87 Difference]: Start difference. First operand 8880 states and 22877 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:22,165 INFO L93 Difference]: Finished difference Result 12150 states and 31382 transitions. [2021-06-12 15:24:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 15:24:22,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-06-12 15:24:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:22,183 INFO L225 Difference]: With dead ends: 12150 [2021-06-12 15:24:22,183 INFO L226 Difference]: Without dead ends: 12150 [2021-06-12 15:24:22,183 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:24:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12150 states. [2021-06-12 15:24:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12150 to 10700. [2021-06-12 15:24:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10700 states, 10698 states have (on average 2.598429613011778) internal successors, (27798), 10699 states have internal predecessors, (27798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 27798 transitions. [2021-06-12 15:24:22,378 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 27798 transitions. Word has length 129 [2021-06-12 15:24:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:22,378 INFO L482 AbstractCegarLoop]: Abstraction has 10700 states and 27798 transitions. [2021-06-12 15:24:22,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 27798 transitions. [2021-06-12 15:24:22,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-06-12 15:24:22,396 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:22,396 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:22,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:22,609 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:22,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1360096717, now seen corresponding path program 3 times [2021-06-12 15:24:22,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:22,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231371067] [2021-06-12 15:24:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:22,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:22,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231371067] [2021-06-12 15:24:22,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231371067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:22,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603253824] [2021-06-12 15:24:22,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:22,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:24:22,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:22,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:24:22,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:23,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603253824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:23,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:23,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-12 15:24:23,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537137532] [2021-06-12 15:24:23,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:24:23,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:24:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:24:23,133 INFO L87 Difference]: Start difference. First operand 10700 states and 27798 transitions. Second operand has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:23,292 INFO L93 Difference]: Finished difference Result 14707 states and 37949 transitions. [2021-06-12 15:24:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 15:24:23,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-06-12 15:24:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:23,312 INFO L225 Difference]: With dead ends: 14707 [2021-06-12 15:24:23,313 INFO L226 Difference]: Without dead ends: 14707 [2021-06-12 15:24:23,313 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14707 states. [2021-06-12 15:24:23,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14707 to 12935. [2021-06-12 15:24:23,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12935 states, 12933 states have (on average 2.5942936673625607) internal successors, (33552), 12934 states have internal predecessors, (33552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12935 states to 12935 states and 33552 transitions. [2021-06-12 15:24:23,631 INFO L78 Accepts]: Start accepts. Automaton has 12935 states and 33552 transitions. Word has length 159 [2021-06-12 15:24:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:23,631 INFO L482 AbstractCegarLoop]: Abstraction has 12935 states and 33552 transitions. [2021-06-12 15:24:23,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 18.727272727272727) internal successors, (206), 11 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 12935 states and 33552 transitions. [2021-06-12 15:24:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-06-12 15:24:23,652 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:23,652 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:23,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:23,865 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:23,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1870546096, now seen corresponding path program 2 times [2021-06-12 15:24:23,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:23,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64212157] [2021-06-12 15:24:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:23,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:23,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64212157] [2021-06-12 15:24:23,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64212157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:23,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033487322] [2021-06-12 15:24:23,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:24,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:24,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:24,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:24:24,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:24,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033487322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:24,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:24,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-12 15:24:24,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338178106] [2021-06-12 15:24:24,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:24:24,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:24,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:24:24,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:24:24,388 INFO L87 Difference]: Start difference. First operand 12935 states and 33552 transitions. Second operand has 10 states, 10 states have (on average 20.2) internal successors, (202), 10 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:24,554 INFO L93 Difference]: Finished difference Result 17340 states and 44831 transitions. [2021-06-12 15:24:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 15:24:24,555 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 10 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-06-12 15:24:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:24,580 INFO L225 Difference]: With dead ends: 17340 [2021-06-12 15:24:24,580 INFO L226 Difference]: Without dead ends: 17340 [2021-06-12 15:24:24,580 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:24:24,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17340 states. [2021-06-12 15:24:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17340 to 12935. [2021-06-12 15:24:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12935 states, 12933 states have (on average 2.5942936673625607) internal successors, (33552), 12934 states have internal predecessors, (33552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12935 states to 12935 states and 33552 transitions. [2021-06-12 15:24:24,994 INFO L78 Accepts]: Start accepts. Automaton has 12935 states and 33552 transitions. Word has length 164 [2021-06-12 15:24:24,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:24,994 INFO L482 AbstractCegarLoop]: Abstraction has 12935 states and 33552 transitions. [2021-06-12 15:24:24,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 20.2) internal successors, (202), 10 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:24,995 INFO L276 IsEmpty]: Start isEmpty. Operand 12935 states and 33552 transitions. [2021-06-12 15:24:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-06-12 15:24:25,017 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:25,018 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:25,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:25,241 INFO L430 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:25,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1339210833, now seen corresponding path program 4 times [2021-06-12 15:24:25,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:25,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064963485] [2021-06-12 15:24:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:25,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:25,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064963485] [2021-06-12 15:24:25,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064963485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:25,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11610394] [2021-06-12 15:24:25,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:25,526 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:24:25,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:25,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:24:25,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:25,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11610394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:25,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:25,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:24:25,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413356473] [2021-06-12 15:24:25,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:24:25,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:25,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:24:25,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:24:25,828 INFO L87 Difference]: Start difference. First operand 12935 states and 33552 transitions. Second operand has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:26,035 INFO L93 Difference]: Finished difference Result 17022 states and 43907 transitions. [2021-06-12 15:24:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 15:24:26,035 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-06-12 15:24:26,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:26,055 INFO L225 Difference]: With dead ends: 17022 [2021-06-12 15:24:26,056 INFO L226 Difference]: Without dead ends: 17022 [2021-06-12 15:24:26,056 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:24:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17022 states. [2021-06-12 15:24:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17022 to 15170. [2021-06-12 15:24:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 15168 states have (on average 2.591376582278481) internal successors, (39306), 15169 states have internal predecessors, (39306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 39306 transitions. [2021-06-12 15:24:26,434 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 39306 transitions. Word has length 194 [2021-06-12 15:24:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:26,434 INFO L482 AbstractCegarLoop]: Abstraction has 15170 states and 39306 transitions. [2021-06-12 15:24:26,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 18.53846153846154) internal successors, (241), 13 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 39306 transitions. [2021-06-12 15:24:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-06-12 15:24:26,456 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:26,456 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:26,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:26,677 INFO L430 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1465987992, now seen corresponding path program 3 times [2021-06-12 15:24:26,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:26,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408022304] [2021-06-12 15:24:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:26,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:26,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408022304] [2021-06-12 15:24:26,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408022304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:26,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517979402] [2021-06-12 15:24:26,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:26,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-12 15:24:26,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:26,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-12 15:24:26,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-12 15:24:27,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517979402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:24:27,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:24:27,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-06-12 15:24:27,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533741511] [2021-06-12 15:24:27,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 15:24:27,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:27,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 15:24:27,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:24:27,212 INFO L87 Difference]: Start difference. First operand 15170 states and 39306 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:27,369 INFO L93 Difference]: Finished difference Result 19600 states and 50777 transitions. [2021-06-12 15:24:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 15:24:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-06-12 15:24:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:27,396 INFO L225 Difference]: With dead ends: 19600 [2021-06-12 15:24:27,396 INFO L226 Difference]: Without dead ends: 19600 [2021-06-12 15:24:27,396 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:24:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19600 states. [2021-06-12 15:24:27,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19600 to 16390. [2021-06-12 15:24:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16390 states, 16388 states have (on average 2.5980595557725166) internal successors, (42577), 16389 states have internal predecessors, (42577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16390 states to 16390 states and 42577 transitions. [2021-06-12 15:24:27,796 INFO L78 Accepts]: Start accepts. Automaton has 16390 states and 42577 transitions. Word has length 199 [2021-06-12 15:24:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:27,797 INFO L482 AbstractCegarLoop]: Abstraction has 16390 states and 42577 transitions. [2021-06-12 15:24:27,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 16390 states and 42577 transitions. [2021-06-12 15:24:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-06-12 15:24:27,817 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:27,817 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:28,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:28,033 INFO L430 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:28,033 INFO L82 PathProgramCache]: Analyzing trace with hash 987938280, now seen corresponding path program 4 times [2021-06-12 15:24:28,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:28,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946243679] [2021-06-12 15:24:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 138 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:24:28,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:28,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946243679] [2021-06-12 15:24:28,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946243679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:28,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948284238] [2021-06-12 15:24:28,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:28,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:24:28,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:28,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:24:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:28,574 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 115 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:28,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948284238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:28,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:28,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-06-12 15:24:28,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993773452] [2021-06-12 15:24:28,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:24:28,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:28,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:24:28,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:24:28,733 INFO L87 Difference]: Start difference. First operand 16390 states and 42577 transitions. Second operand has 10 states, 10 states have (on average 21.5) internal successors, (215), 10 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:28,935 INFO L93 Difference]: Finished difference Result 21425 states and 55669 transitions. [2021-06-12 15:24:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:24:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.5) internal successors, (215), 10 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-06-12 15:24:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:28,962 INFO L225 Difference]: With dead ends: 21425 [2021-06-12 15:24:28,962 INFO L226 Difference]: Without dead ends: 21425 [2021-06-12 15:24:28,962 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21425 states. [2021-06-12 15:24:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21425 to 18210. [2021-06-12 15:24:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18210 states, 18208 states have (on average 2.608633567662566) internal successors, (47498), 18209 states have internal predecessors, (47498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18210 states to 18210 states and 47498 transitions. [2021-06-12 15:24:29,242 INFO L78 Accepts]: Start accepts. Automaton has 18210 states and 47498 transitions. Word has length 199 [2021-06-12 15:24:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:29,242 INFO L482 AbstractCegarLoop]: Abstraction has 18210 states and 47498 transitions. [2021-06-12 15:24:29,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 21.5) internal successors, (215), 10 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 18210 states and 47498 transitions. [2021-06-12 15:24:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-06-12 15:24:29,267 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:29,267 INFO L472 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:29,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-12 15:24:29,481 INFO L430 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:29,481 INFO L82 PathProgramCache]: Analyzing trace with hash 485036685, now seen corresponding path program 5 times [2021-06-12 15:24:29,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:29,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304403514] [2021-06-12 15:24:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:29,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:29,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304403514] [2021-06-12 15:24:29,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304403514] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:29,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769565421] [2021-06-12 15:24:29,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:29,931 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-12 15:24:29,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:29,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:24:29,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:30,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769565421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:30,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:30,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:24:30,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231179869] [2021-06-12 15:24:30,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:24:30,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:30,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:24:30,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:24:30,270 INFO L87 Difference]: Start difference. First operand 18210 states and 47498 transitions. Second operand has 15 states, 15 states have (on average 18.4) internal successors, (276), 15 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:30,557 INFO L93 Difference]: Finished difference Result 23982 states and 62236 transitions. [2021-06-12 15:24:30,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:24:30,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.4) internal successors, (276), 15 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2021-06-12 15:24:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:30,579 INFO L225 Difference]: With dead ends: 23982 [2021-06-12 15:24:30,580 INFO L226 Difference]: Without dead ends: 23982 [2021-06-12 15:24:30,580 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:24:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23982 states. [2021-06-12 15:24:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23982 to 20445. [2021-06-12 15:24:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20445 states, 20443 states have (on average 2.6049014332534366) internal successors, (53252), 20444 states have internal predecessors, (53252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20445 states to 20445 states and 53252 transitions. [2021-06-12 15:24:30,823 INFO L78 Accepts]: Start accepts. Automaton has 20445 states and 53252 transitions. Word has length 229 [2021-06-12 15:24:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:30,823 INFO L482 AbstractCegarLoop]: Abstraction has 20445 states and 53252 transitions. [2021-06-12 15:24:30,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 18.4) internal successors, (276), 15 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 20445 states and 53252 transitions. [2021-06-12 15:24:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-06-12 15:24:30,849 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:30,849 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:31,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:31,065 INFO L430 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash -187226553, now seen corresponding path program 1 times [2021-06-12 15:24:31,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:31,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815623553] [2021-06-12 15:24:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 54 proven. 122 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:31,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:31,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815623553] [2021-06-12 15:24:31,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815623553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:31,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669571233] [2021-06-12 15:24:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:24:31,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 54 proven. 122 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:31,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669571233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:31,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:31,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:24:31,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713975756] [2021-06-12 15:24:31,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:24:31,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:31,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:24:31,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:24:31,748 INFO L87 Difference]: Start difference. First operand 20445 states and 53252 transitions. Second operand has 13 states, 13 states have (on average 20.846153846153847) internal successors, (271), 13 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:31,996 INFO L93 Difference]: Finished difference Result 31205 states and 80942 transitions. [2021-06-12 15:24:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 15:24:31,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.846153846153847) internal successors, (271), 13 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-06-12 15:24:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:32,030 INFO L225 Difference]: With dead ends: 31205 [2021-06-12 15:24:32,031 INFO L226 Difference]: Without dead ends: 31205 [2021-06-12 15:24:32,031 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:24:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31205 states. [2021-06-12 15:24:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31205 to 19965. [2021-06-12 15:24:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19965 states, 19963 states have (on average 2.602214096077744) internal successors, (51948), 19964 states have internal predecessors, (51948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19965 states to 19965 states and 51948 transitions. [2021-06-12 15:24:32,367 INFO L78 Accepts]: Start accepts. Automaton has 19965 states and 51948 transitions. Word has length 233 [2021-06-12 15:24:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:32,368 INFO L482 AbstractCegarLoop]: Abstraction has 19965 states and 51948 transitions. [2021-06-12 15:24:32,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 20.846153846153847) internal successors, (271), 13 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:32,368 INFO L276 IsEmpty]: Start isEmpty. Operand 19965 states and 51948 transitions. [2021-06-12 15:24:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-06-12 15:24:32,386 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:32,386 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:32,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:32,588 INFO L430 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:32,589 INFO L82 PathProgramCache]: Analyzing trace with hash 822404532, now seen corresponding path program 5 times [2021-06-12 15:24:32,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:32,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109869278] [2021-06-12 15:24:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 258 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:24:32,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:32,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109869278] [2021-06-12 15:24:32,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109869278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:32,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115637568] [2021-06-12 15:24:32,725 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:32,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-12 15:24:32,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:32,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:24:32,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:33,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115637568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:33,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:33,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-06-12 15:24:33,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943439304] [2021-06-12 15:24:33,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:24:33,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:33,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:24:33,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:24:33,232 INFO L87 Difference]: Start difference. First operand 19965 states and 51948 transitions. Second operand has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:33,449 INFO L93 Difference]: Finished difference Result 27170 states and 70572 transitions. [2021-06-12 15:24:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 15:24:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-06-12 15:24:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:33,480 INFO L225 Difference]: With dead ends: 27170 [2021-06-12 15:24:33,480 INFO L226 Difference]: Without dead ends: 27170 [2021-06-12 15:24:33,480 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-06-12 15:24:33,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27170 states. [2021-06-12 15:24:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27170 to 22865. [2021-06-12 15:24:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22865 states, 22863 states have (on average 2.6165857499015877) internal successors, (59823), 22864 states have internal predecessors, (59823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22865 states to 22865 states and 59823 transitions. [2021-06-12 15:24:33,926 INFO L78 Accepts]: Start accepts. Automaton has 22865 states and 59823 transitions. Word has length 234 [2021-06-12 15:24:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:33,927 INFO L482 AbstractCegarLoop]: Abstraction has 22865 states and 59823 transitions. [2021-06-12 15:24:33,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22865 states and 59823 transitions. [2021-06-12 15:24:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-06-12 15:24:33,949 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:33,949 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:34,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-12 15:24:34,149 INFO L430 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash 209544943, now seen corresponding path program 6 times [2021-06-12 15:24:34,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:34,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021547957] [2021-06-12 15:24:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:34,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:34,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021547957] [2021-06-12 15:24:34,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021547957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:34,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867281258] [2021-06-12 15:24:34,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:34,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-12 15:24:34,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:34,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:24:34,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:35,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867281258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:35,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:35,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:24:35,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204011659] [2021-06-12 15:24:35,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:35,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:35,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:35,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:35,012 INFO L87 Difference]: Start difference. First operand 22865 states and 59823 transitions. Second operand has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:35,304 INFO L93 Difference]: Finished difference Result 29242 states and 75990 transitions. [2021-06-12 15:24:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-12 15:24:35,305 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2021-06-12 15:24:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:35,345 INFO L225 Difference]: With dead ends: 29242 [2021-06-12 15:24:35,345 INFO L226 Difference]: Without dead ends: 29242 [2021-06-12 15:24:35,346 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 200.5ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:24:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29242 states. [2021-06-12 15:24:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29242 to 25100. [2021-06-12 15:24:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25100 states, 25098 states have (on average 2.612837676308869) internal successors, (65577), 25099 states have internal predecessors, (65577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25100 states to 25100 states and 65577 transitions. [2021-06-12 15:24:35,783 INFO L78 Accepts]: Start accepts. Automaton has 25100 states and 65577 transitions. Word has length 264 [2021-06-12 15:24:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:35,784 INFO L482 AbstractCegarLoop]: Abstraction has 25100 states and 65577 transitions. [2021-06-12 15:24:35,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25100 states and 65577 transitions. [2021-06-12 15:24:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-06-12 15:24:35,808 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:35,808 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:36,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-12 15:24:36,009 INFO L430 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1544523377, now seen corresponding path program 2 times [2021-06-12 15:24:36,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:36,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311524766] [2021-06-12 15:24:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 57 proven. 242 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:36,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:36,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311524766] [2021-06-12 15:24:36,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311524766] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:36,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514379573] [2021-06-12 15:24:36,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:36,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:36,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:36,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:24:36,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 57 proven. 242 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:24:36,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514379573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:36,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:36,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:24:36,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743821730] [2021-06-12 15:24:36,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:24:36,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:36,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:24:36,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:24:36,700 INFO L87 Difference]: Start difference. First operand 25100 states and 65577 transitions. Second operand has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:37,017 INFO L93 Difference]: Finished difference Result 38575 states and 100043 transitions. [2021-06-12 15:24:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 15:24:37,017 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2021-06-12 15:24:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:37,198 INFO L225 Difference]: With dead ends: 38575 [2021-06-12 15:24:37,198 INFO L226 Difference]: Without dead ends: 38575 [2021-06-12 15:24:37,199 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:24:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38575 states. [2021-06-12 15:24:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38575 to 25100. [2021-06-12 15:24:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25100 states, 25098 states have (on average 2.612837676308869) internal successors, (65577), 25099 states have internal predecessors, (65577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25100 states to 25100 states and 65577 transitions. [2021-06-12 15:24:37,518 INFO L78 Accepts]: Start accepts. Automaton has 25100 states and 65577 transitions. Word has length 268 [2021-06-12 15:24:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:37,519 INFO L482 AbstractCegarLoop]: Abstraction has 25100 states and 65577 transitions. [2021-06-12 15:24:37,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.4) internal successors, (306), 15 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 25100 states and 65577 transitions. [2021-06-12 15:24:37,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-06-12 15:24:37,540 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:37,540 INFO L472 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:37,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-12 15:24:37,744 INFO L430 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1695875948, now seen corresponding path program 6 times [2021-06-12 15:24:37,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:37,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818262473] [2021-06-12 15:24:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:38,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:38,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818262473] [2021-06-12 15:24:38,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818262473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:38,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418924507] [2021-06-12 15:24:38,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:38,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-12 15:24:38,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:38,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:24:38,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:38,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418924507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:38,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:38,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-12 15:24:38,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317994394] [2021-06-12 15:24:38,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:24:38,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:24:38,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:24:38,666 INFO L87 Difference]: Start difference. First operand 25100 states and 65577 transitions. Second operand has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:38,928 INFO L93 Difference]: Finished difference Result 35570 states and 92379 transitions. [2021-06-12 15:24:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 15:24:38,929 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-06-12 15:24:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:38,977 INFO L225 Difference]: With dead ends: 35570 [2021-06-12 15:24:38,978 INFO L226 Difference]: Without dead ends: 35570 [2021-06-12 15:24:38,978 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 139.0ms TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-06-12 15:24:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35570 states. [2021-06-12 15:24:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35570 to 25100. [2021-06-12 15:24:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25100 states, 25098 states have (on average 2.612837676308869) internal successors, (65577), 25099 states have internal predecessors, (65577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25100 states to 25100 states and 65577 transitions. [2021-06-12 15:24:39,437 INFO L78 Accepts]: Start accepts. Automaton has 25100 states and 65577 transitions. Word has length 269 [2021-06-12 15:24:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:39,437 INFO L482 AbstractCegarLoop]: Abstraction has 25100 states and 65577 transitions. [2021-06-12 15:24:39,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25100 states and 65577 transitions. [2021-06-12 15:24:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-06-12 15:24:39,466 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:39,466 INFO L472 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:39,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:39,681 INFO L430 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:39,681 INFO L82 PathProgramCache]: Analyzing trace with hash 999967336, now seen corresponding path program 7 times [2021-06-12 15:24:39,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:39,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189042242] [2021-06-12 15:24:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 413 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:24:39,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:39,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189042242] [2021-06-12 15:24:39,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189042242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:39,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822739958] [2021-06-12 15:24:39,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:39,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:24:39,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 15 proven. 390 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:40,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822739958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:40,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:40,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-06-12 15:24:40,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382597297] [2021-06-12 15:24:40,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:24:40,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:40,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:24:40,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:24:40,326 INFO L87 Difference]: Start difference. First operand 25100 states and 65577 transitions. Second operand has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:40,626 INFO L93 Difference]: Finished difference Result 34595 states and 90013 transitions. [2021-06-12 15:24:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 15:24:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-06-12 15:24:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:40,661 INFO L225 Difference]: With dead ends: 34595 [2021-06-12 15:24:40,661 INFO L226 Difference]: Without dead ends: 34595 [2021-06-12 15:24:40,661 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-06-12 15:24:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34595 states. [2021-06-12 15:24:40,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34595 to 26920. [2021-06-12 15:24:40,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26920 states, 26918 states have (on average 2.618991009733264) internal successors, (70498), 26919 states have internal predecessors, (70498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26920 states to 26920 states and 70498 transitions. [2021-06-12 15:24:41,033 INFO L78 Accepts]: Start accepts. Automaton has 26920 states and 70498 transitions. Word has length 269 [2021-06-12 15:24:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:41,033 INFO L482 AbstractCegarLoop]: Abstraction has 26920 states and 70498 transitions. [2021-06-12 15:24:41,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 26920 states and 70498 transitions. [2021-06-12 15:24:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-06-12 15:24:41,062 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:41,062 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:41,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:41,271 INFO L430 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:41,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1826871475, now seen corresponding path program 7 times [2021-06-12 15:24:41,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:41,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482530888] [2021-06-12 15:24:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:41,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:41,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482530888] [2021-06-12 15:24:41,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482530888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:41,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369343528] [2021-06-12 15:24:41,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:41,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:24:41,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:42,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369343528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:42,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:42,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-06-12 15:24:42,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639954394] [2021-06-12 15:24:42,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-12 15:24:42,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:42,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-12 15:24:42,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-06-12 15:24:42,107 INFO L87 Difference]: Start difference. First operand 26920 states and 70498 transitions. Second operand has 19 states, 19 states have (on average 18.210526315789473) internal successors, (346), 19 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:42,410 INFO L93 Difference]: Finished difference Result 36062 states and 94002 transitions. [2021-06-12 15:24:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-12 15:24:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 18.210526315789473) internal successors, (346), 19 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2021-06-12 15:24:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:42,449 INFO L225 Difference]: With dead ends: 36062 [2021-06-12 15:24:42,449 INFO L226 Difference]: Without dead ends: 36062 [2021-06-12 15:24:42,450 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 240.2ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:24:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36062 states. [2021-06-12 15:24:42,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36062 to 30235. [2021-06-12 15:24:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30235 states, 30233 states have (on average 2.6198524790791518) internal successors, (79206), 30234 states have internal predecessors, (79206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30235 states to 30235 states and 79206 transitions. [2021-06-12 15:24:42,966 INFO L78 Accepts]: Start accepts. Automaton has 30235 states and 79206 transitions. Word has length 299 [2021-06-12 15:24:42,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:42,967 INFO L482 AbstractCegarLoop]: Abstraction has 30235 states and 79206 transitions. [2021-06-12 15:24:42,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 18.210526315789473) internal successors, (346), 19 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 30235 states and 79206 transitions. [2021-06-12 15:24:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-06-12 15:24:43,000 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:43,000 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:43,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:43,201 INFO L430 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:43,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:43,201 INFO L82 PathProgramCache]: Analyzing trace with hash -86492106, now seen corresponding path program 3 times [2021-06-12 15:24:43,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:43,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795568172] [2021-06-12 15:24:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 58 proven. 294 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-06-12 15:24:43,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:43,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795568172] [2021-06-12 15:24:43,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795568172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:43,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708870604] [2021-06-12 15:24:43,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:43,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-12 15:24:43,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:43,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-12 15:24:43,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 246 proven. 67 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-06-12 15:24:43,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708870604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:43,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:43,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2021-06-12 15:24:43,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144259614] [2021-06-12 15:24:43,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-12 15:24:43,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-12 15:24:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:24:43,987 INFO L87 Difference]: Start difference. First operand 30235 states and 79206 transitions. Second operand has 21 states, 21 states have (on average 24.476190476190474) internal successors, (514), 21 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:44,659 INFO L93 Difference]: Finished difference Result 69690 states and 181990 transitions. [2021-06-12 15:24:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 15:24:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.476190476190474) internal successors, (514), 21 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2021-06-12 15:24:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:44,742 INFO L225 Difference]: With dead ends: 69690 [2021-06-12 15:24:44,742 INFO L226 Difference]: Without dead ends: 69690 [2021-06-12 15:24:44,743 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 507.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1816, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 15:24:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69690 states. [2021-06-12 15:24:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69690 to 38635. [2021-06-12 15:24:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38635 states, 38633 states have (on average 2.638625009706727) internal successors, (101938), 38634 states have internal predecessors, (101938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38635 states to 38635 states and 101938 transitions. [2021-06-12 15:24:45,493 INFO L78 Accepts]: Start accepts. Automaton has 38635 states and 101938 transitions. Word has length 302 [2021-06-12 15:24:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:45,493 INFO L482 AbstractCegarLoop]: Abstraction has 38635 states and 101938 transitions. [2021-06-12 15:24:45,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 24.476190476190474) internal successors, (514), 21 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 38635 states and 101938 transitions. [2021-06-12 15:24:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-06-12 15:24:45,529 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:45,529 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:45,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-12 15:24:45,731 INFO L430 AbstractCegarLoop]: === Iteration 22 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1531817012, now seen corresponding path program 8 times [2021-06-12 15:24:45,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:45,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031117419] [2021-06-12 15:24:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:45,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031117419] [2021-06-12 15:24:45,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031117419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472671051] [2021-06-12 15:24:45,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:46,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:46,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:24:46,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:46,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472671051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:46,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:46,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-12 15:24:46,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923136280] [2021-06-12 15:24:46,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:24:46,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:46,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:24:46,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:24:46,579 INFO L87 Difference]: Start difference. First operand 38635 states and 101938 transitions. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:46,901 INFO L93 Difference]: Finished difference Result 58520 states and 153912 transitions. [2021-06-12 15:24:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:24:46,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-06-12 15:24:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:46,977 INFO L225 Difference]: With dead ends: 58520 [2021-06-12 15:24:46,977 INFO L226 Difference]: Without dead ends: 58520 [2021-06-12 15:24:46,977 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 180.6ms TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-06-12 15:24:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58520 states. [2021-06-12 15:24:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58520 to 40455. [2021-06-12 15:24:47,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40455 states, 40453 states have (on average 2.6415593404691866) internal successors, (106859), 40454 states have internal predecessors, (106859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40455 states to 40455 states and 106859 transitions. [2021-06-12 15:24:47,944 INFO L78 Accepts]: Start accepts. Automaton has 40455 states and 106859 transitions. Word has length 304 [2021-06-12 15:24:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:47,944 INFO L482 AbstractCegarLoop]: Abstraction has 40455 states and 106859 transitions. [2021-06-12 15:24:47,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 40455 states and 106859 transitions. [2021-06-12 15:24:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-06-12 15:24:47,982 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:47,982 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:48,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-12 15:24:48,183 INFO L430 AbstractCegarLoop]: === Iteration 23 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:48,183 INFO L82 PathProgramCache]: Analyzing trace with hash 247513136, now seen corresponding path program 9 times [2021-06-12 15:24:48,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:48,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767145604] [2021-06-12 15:24:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:48,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:48,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767145604] [2021-06-12 15:24:48,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767145604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:48,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214654455] [2021-06-12 15:24:48,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:48,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-12 15:24:48,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:48,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:24:48,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:49,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214654455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:49,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:49,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-12 15:24:49,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87027101] [2021-06-12 15:24:49,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:24:49,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:24:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:24:49,005 INFO L87 Difference]: Start difference. First operand 40455 states and 106859 transitions. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:49,325 INFO L93 Difference]: Finished difference Result 60835 states and 160146 transitions. [2021-06-12 15:24:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:24:49,326 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-06-12 15:24:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:49,404 INFO L225 Difference]: With dead ends: 60835 [2021-06-12 15:24:49,404 INFO L226 Difference]: Without dead ends: 60835 [2021-06-12 15:24:49,405 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 187.0ms TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2021-06-12 15:24:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60835 states. [2021-06-12 15:24:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60835 to 42275. [2021-06-12 15:24:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42275 states, 42273 states have (on average 2.6442410048967426) internal successors, (111780), 42274 states have internal predecessors, (111780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:50,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42275 states to 42275 states and 111780 transitions. [2021-06-12 15:24:50,205 INFO L78 Accepts]: Start accepts. Automaton has 42275 states and 111780 transitions. Word has length 304 [2021-06-12 15:24:50,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:50,206 INFO L482 AbstractCegarLoop]: Abstraction has 42275 states and 111780 transitions. [2021-06-12 15:24:50,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:50,206 INFO L276 IsEmpty]: Start isEmpty. Operand 42275 states and 111780 transitions. [2021-06-12 15:24:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-06-12 15:24:50,247 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:50,247 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:50,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-12 15:24:50,448 INFO L430 AbstractCegarLoop]: === Iteration 24 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:50,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:50,448 INFO L82 PathProgramCache]: Analyzing trace with hash -304592204, now seen corresponding path program 10 times [2021-06-12 15:24:50,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:50,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894399497] [2021-06-12 15:24:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:50,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:50,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894399497] [2021-06-12 15:24:50,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894399497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:50,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436352300] [2021-06-12 15:24:50,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:50,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:24:50,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:50,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:24:50,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:51,120 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:51,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436352300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:51,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:51,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-12 15:24:51,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756776445] [2021-06-12 15:24:51,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:24:51,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:51,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:24:51,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:24:51,474 INFO L87 Difference]: Start difference. First operand 42275 states and 111780 transitions. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:51,900 INFO L93 Difference]: Finished difference Result 62310 states and 163598 transitions. [2021-06-12 15:24:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-12 15:24:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-06-12 15:24:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:51,969 INFO L225 Difference]: With dead ends: 62310 [2021-06-12 15:24:51,969 INFO L226 Difference]: Without dead ends: 62310 [2021-06-12 15:24:51,969 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 174.3ms TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:24:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62310 states. [2021-06-12 15:24:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62310 to 43355. [2021-06-12 15:24:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43355 states, 43353 states have (on average 2.646506585472747) internal successors, (114734), 43354 states have internal predecessors, (114734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43355 states to 43355 states and 114734 transitions. [2021-06-12 15:24:52,626 INFO L78 Accepts]: Start accepts. Automaton has 43355 states and 114734 transitions. Word has length 304 [2021-06-12 15:24:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:52,627 INFO L482 AbstractCegarLoop]: Abstraction has 43355 states and 114734 transitions. [2021-06-12 15:24:52,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 43355 states and 114734 transitions. [2021-06-12 15:24:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-06-12 15:24:52,674 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:52,674 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:52,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-12 15:24:52,874 INFO L430 AbstractCegarLoop]: === Iteration 25 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1000500816, now seen corresponding path program 11 times [2021-06-12 15:24:52,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:52,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539800171] [2021-06-12 15:24:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:53,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:53,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539800171] [2021-06-12 15:24:53,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539800171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:53,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765724301] [2021-06-12 15:24:53,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:53,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-12 15:24:53,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:53,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:24:53,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:53,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765724301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:53,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:53,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-12 15:24:53,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735825278] [2021-06-12 15:24:53,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:24:53,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:53,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:24:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:24:53,940 INFO L87 Difference]: Start difference. First operand 43355 states and 114734 transitions. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:54,325 INFO L93 Difference]: Finished difference Result 61860 states and 162764 transitions. [2021-06-12 15:24:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 15:24:54,326 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-06-12 15:24:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:54,403 INFO L225 Difference]: With dead ends: 61860 [2021-06-12 15:24:54,403 INFO L226 Difference]: Without dead ends: 61860 [2021-06-12 15:24:54,403 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 171.9ms TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:24:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61860 states. [2021-06-12 15:24:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61860 to 46255. [2021-06-12 15:24:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46255 states, 46253 states have (on average 2.650833459451279) internal successors, (122609), 46254 states have internal predecessors, (122609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46255 states to 46255 states and 122609 transitions. [2021-06-12 15:24:55,275 INFO L78 Accepts]: Start accepts. Automaton has 46255 states and 122609 transitions. Word has length 304 [2021-06-12 15:24:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:55,275 INFO L482 AbstractCegarLoop]: Abstraction has 46255 states and 122609 transitions. [2021-06-12 15:24:55,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 46255 states and 122609 transitions. [2021-06-12 15:24:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-06-12 15:24:55,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:55,314 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:55,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-12 15:24:55,515 INFO L430 AbstractCegarLoop]: === Iteration 26 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:55,515 INFO L82 PathProgramCache]: Analyzing trace with hash 794691892, now seen corresponding path program 12 times [2021-06-12 15:24:55,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:55,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041134415] [2021-06-12 15:24:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 603 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:24:55,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:55,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041134415] [2021-06-12 15:24:55,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041134415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:55,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798419644] [2021-06-12 15:24:55,673 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:56,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-12 15:24:56,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:56,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:24:56,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:56,284 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 18 proven. 580 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:24:56,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798419644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:56,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:56,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-06-12 15:24:56,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971072851] [2021-06-12 15:24:56,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:24:56,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:56,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:24:56,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:24:56,677 INFO L87 Difference]: Start difference. First operand 46255 states and 122609 transitions. Second operand has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:57,028 INFO L93 Difference]: Finished difference Result 58480 states and 154067 transitions. [2021-06-12 15:24:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:24:57,029 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-06-12 15:24:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:57,231 INFO L225 Difference]: With dead ends: 58480 [2021-06-12 15:24:57,232 INFO L226 Difference]: Without dead ends: 58480 [2021-06-12 15:24:57,232 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 186.4ms TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-06-12 15:24:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58480 states. [2021-06-12 15:24:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58480 to 49155. [2021-06-12 15:24:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49155 states, 49153 states have (on average 2.654649767053893) internal successors, (130484), 49154 states have internal predecessors, (130484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49155 states to 49155 states and 130484 transitions. [2021-06-12 15:24:58,120 INFO L78 Accepts]: Start accepts. Automaton has 49155 states and 130484 transitions. Word has length 304 [2021-06-12 15:24:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:58,120 INFO L482 AbstractCegarLoop]: Abstraction has 49155 states and 130484 transitions. [2021-06-12 15:24:58,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 49155 states and 130484 transitions. [2021-06-12 15:24:58,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-06-12 15:24:58,172 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:58,172 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:24:58,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:58,397 INFO L430 AbstractCegarLoop]: === Iteration 27 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:58,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 826022447, now seen corresponding path program 8 times [2021-06-12 15:24:58,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:58,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430574442] [2021-06-12 15:24:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:58,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:58,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430574442] [2021-06-12 15:24:58,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430574442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:58,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196290285] [2021-06-12 15:24:58,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:58,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:58,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:58,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:58,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:59,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196290285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:59,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:59,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-06-12 15:24:59,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115427214] [2021-06-12 15:24:59,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-12 15:24:59,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:59,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-12 15:24:59,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:24:59,247 INFO L87 Difference]: Start difference. First operand 49155 states and 130484 transitions. Second operand has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:24:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:59,691 INFO L93 Difference]: Finished difference Result 57822 states and 152463 transitions. [2021-06-12 15:24:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:24:59,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2021-06-12 15:24:59,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:59,766 INFO L225 Difference]: With dead ends: 57822 [2021-06-12 15:24:59,767 INFO L226 Difference]: Without dead ends: 57822 [2021-06-12 15:24:59,767 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 288.9ms TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2021-06-12 15:24:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57822 states. [2021-06-12 15:25:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57822 to 51390. [2021-06-12 15:25:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51390 states, 51388 states have (on average 2.6511636958044678) internal successors, (136238), 51389 states have internal predecessors, (136238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51390 states to 51390 states and 136238 transitions. [2021-06-12 15:25:00,650 INFO L78 Accepts]: Start accepts. Automaton has 51390 states and 136238 transitions. Word has length 334 [2021-06-12 15:25:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:00,650 INFO L482 AbstractCegarLoop]: Abstraction has 51390 states and 136238 transitions. [2021-06-12 15:25:00,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 18.142857142857142) internal successors, (381), 21 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 51390 states and 136238 transitions. [2021-06-12 15:25:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-06-12 15:25:00,697 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:00,698 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:00,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-06-12 15:25:00,898 INFO L430 AbstractCegarLoop]: === Iteration 28 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash -87858067, now seen corresponding path program 4 times [2021-06-12 15:25:00,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:00,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164474465] [2021-06-12 15:25:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:01,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:01,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164474465] [2021-06-12 15:25:01,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164474465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:01,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067790511] [2021-06-12 15:25:01,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:01,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:25:01,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:01,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:01,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:01,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067790511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:01,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:01,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:25:01,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670521947] [2021-06-12 15:25:01,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:25:01,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:01,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:25:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:25:01,893 INFO L87 Difference]: Start difference. First operand 51390 states and 136238 transitions. Second operand has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:02,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:02,385 INFO L93 Difference]: Finished difference Result 76125 states and 201014 transitions. [2021-06-12 15:25:02,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:25:02,386 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-06-12 15:25:02,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:02,479 INFO L225 Difference]: With dead ends: 76125 [2021-06-12 15:25:02,480 INFO L226 Difference]: Without dead ends: 76125 [2021-06-12 15:25:02,480 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 155.4ms TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2021-06-12 15:25:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76125 states. [2021-06-12 15:25:03,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76125 to 53550. [2021-06-12 15:25:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53550 states, 53548 states have (on average 2.6545529244789723) internal successors, (142146), 53549 states have internal predecessors, (142146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53550 states to 53550 states and 142146 transitions. [2021-06-12 15:25:03,541 INFO L78 Accepts]: Start accepts. Automaton has 53550 states and 142146 transitions. Word has length 338 [2021-06-12 15:25:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:03,541 INFO L482 AbstractCegarLoop]: Abstraction has 53550 states and 142146 transitions. [2021-06-12 15:25:03,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 53550 states and 142146 transitions. [2021-06-12 15:25:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-06-12 15:25:03,603 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:03,603 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:03,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:03,804 INFO L430 AbstractCegarLoop]: === Iteration 29 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:03,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1213136945, now seen corresponding path program 5 times [2021-06-12 15:25:03,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:03,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576109160] [2021-06-12 15:25:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:04,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:04,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576109160] [2021-06-12 15:25:04,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576109160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:04,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657146511] [2021-06-12 15:25:04,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:04,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-12 15:25:04,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:04,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:04,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:04,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657146511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:04,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:04,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:25:04,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062249072] [2021-06-12 15:25:04,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:25:04,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:04,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:25:04,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:25:04,920 INFO L87 Difference]: Start difference. First operand 53550 states and 142146 transitions. Second operand has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:05,241 INFO L93 Difference]: Finished difference Result 74195 states and 195180 transitions. [2021-06-12 15:25:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:25:05,242 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-06-12 15:25:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:05,334 INFO L225 Difference]: With dead ends: 74195 [2021-06-12 15:25:05,334 INFO L226 Difference]: Without dead ends: 74195 [2021-06-12 15:25:05,335 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2021-06-12 15:25:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74195 states. [2021-06-12 15:25:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74195 to 54890. [2021-06-12 15:25:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54890 states, 54888 states have (on average 2.655644220959044) internal successors, (145763), 54889 states have internal predecessors, (145763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54890 states to 54890 states and 145763 transitions. [2021-06-12 15:25:06,423 INFO L78 Accepts]: Start accepts. Automaton has 54890 states and 145763 transitions. Word has length 338 [2021-06-12 15:25:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:06,423 INFO L482 AbstractCegarLoop]: Abstraction has 54890 states and 145763 transitions. [2021-06-12 15:25:06,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:06,423 INFO L276 IsEmpty]: Start isEmpty. Operand 54890 states and 145763 transitions. [2021-06-12 15:25:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-06-12 15:25:06,488 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:06,488 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:06,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-12 15:25:06,688 INFO L430 AbstractCegarLoop]: === Iteration 30 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:06,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1063720971, now seen corresponding path program 6 times [2021-06-12 15:25:06,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:06,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210771139] [2021-06-12 15:25:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 599 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:25:07,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:07,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210771139] [2021-06-12 15:25:07,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210771139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:07,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147622301] [2021-06-12 15:25:07,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:07,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-12 15:25:07,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:07,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:07,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:08,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147622301] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:08,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:08,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-06-12 15:25:08,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549263883] [2021-06-12 15:25:08,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:25:08,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:25:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:25:08,008 INFO L87 Difference]: Start difference. First operand 54890 states and 145763 transitions. Second operand has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:08,512 INFO L93 Difference]: Finished difference Result 79850 states and 210905 transitions. [2021-06-12 15:25:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:25:08,513 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-06-12 15:25:08,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:08,611 INFO L225 Difference]: With dead ends: 79850 [2021-06-12 15:25:08,611 INFO L226 Difference]: Without dead ends: 79850 [2021-06-12 15:25:08,612 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 175.1ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-06-12 15:25:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79850 states. [2021-06-12 15:25:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79850 to 54890. [2021-06-12 15:25:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54890 states, 54888 states have (on average 2.655644220959044) internal successors, (145763), 54889 states have internal predecessors, (145763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54890 states to 54890 states and 145763 transitions. [2021-06-12 15:25:09,765 INFO L78 Accepts]: Start accepts. Automaton has 54890 states and 145763 transitions. Word has length 338 [2021-06-12 15:25:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:09,765 INFO L482 AbstractCegarLoop]: Abstraction has 54890 states and 145763 transitions. [2021-06-12 15:25:09,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 54890 states and 145763 transitions. [2021-06-12 15:25:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-06-12 15:25:09,830 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:09,831 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:10,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:10,031 INFO L430 AbstractCegarLoop]: === Iteration 31 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:10,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:10,032 INFO L82 PathProgramCache]: Analyzing trace with hash 2105967447, now seen corresponding path program 7 times [2021-06-12 15:25:10,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:10,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464140119] [2021-06-12 15:25:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 599 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:25:10,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:10,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464140119] [2021-06-12 15:25:10,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464140119] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:10,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136536875] [2021-06-12 15:25:10,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:10,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:10,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:10,668 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:25:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:10,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136536875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:10,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:10,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-06-12 15:25:10,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996243926] [2021-06-12 15:25:10,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:25:10,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:10,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:25:10,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:25:10,883 INFO L87 Difference]: Start difference. First operand 54890 states and 145763 transitions. Second operand has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:11,241 INFO L93 Difference]: Finished difference Result 76925 states and 202929 transitions. [2021-06-12 15:25:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:25:11,241 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-06-12 15:25:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:11,342 INFO L225 Difference]: With dead ends: 76925 [2021-06-12 15:25:11,342 INFO L226 Difference]: Without dead ends: 76925 [2021-06-12 15:25:11,343 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:25:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76925 states. [2021-06-12 15:25:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76925 to 56710. [2021-06-12 15:25:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56710 states, 56708 states have (on average 2.6571912252239542) internal successors, (150684), 56709 states have internal predecessors, (150684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56710 states to 56710 states and 150684 transitions. [2021-06-12 15:25:12,466 INFO L78 Accepts]: Start accepts. Automaton has 56710 states and 150684 transitions. Word has length 338 [2021-06-12 15:25:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:12,467 INFO L482 AbstractCegarLoop]: Abstraction has 56710 states and 150684 transitions. [2021-06-12 15:25:12,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 56710 states and 150684 transitions. [2021-06-12 15:25:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-06-12 15:25:12,534 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:12,535 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:12,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-06-12 15:25:12,744 INFO L430 AbstractCegarLoop]: === Iteration 32 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:12,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash 953064629, now seen corresponding path program 8 times [2021-06-12 15:25:12,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:12,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569070307] [2021-06-12 15:25:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 599 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:25:13,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:13,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569070307] [2021-06-12 15:25:13,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569070307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:13,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211016885] [2021-06-12 15:25:13,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:13,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:25:13,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:13,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:13,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 18 proven. 576 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:13,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211016885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:13,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:13,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-06-12 15:25:13,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696348962] [2021-06-12 15:25:13,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:25:13,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:13,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:25:13,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:25:13,660 INFO L87 Difference]: Start difference. First operand 56710 states and 150684 transitions. Second operand has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:13,992 INFO L93 Difference]: Finished difference Result 72430 states and 190479 transitions. [2021-06-12 15:25:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:25:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2021-06-12 15:25:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:14,264 INFO L225 Difference]: With dead ends: 72430 [2021-06-12 15:25:14,265 INFO L226 Difference]: Without dead ends: 72430 [2021-06-12 15:25:14,265 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 369.0ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:25:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72430 states. [2021-06-12 15:25:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72430 to 56970. [2021-06-12 15:25:15,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56970 states, 56968 states have (on average 2.6567020081449235) internal successors, (151347), 56969 states have internal predecessors, (151347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56970 states to 56970 states and 151347 transitions. [2021-06-12 15:25:15,131 INFO L78 Accepts]: Start accepts. Automaton has 56970 states and 151347 transitions. Word has length 338 [2021-06-12 15:25:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:15,131 INFO L482 AbstractCegarLoop]: Abstraction has 56970 states and 151347 transitions. [2021-06-12 15:25:15,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 21.266666666666666) internal successors, (319), 15 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 56970 states and 151347 transitions. [2021-06-12 15:25:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-06-12 15:25:15,417 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:15,417 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:15,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:15,618 INFO L430 AbstractCegarLoop]: === Iteration 33 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash -32186388, now seen corresponding path program 13 times [2021-06-12 15:25:15,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:15,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489081791] [2021-06-12 15:25:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:15,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489081791] [2021-06-12 15:25:15,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489081791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334093914] [2021-06-12 15:25:15,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:15,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:15,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:16,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334093914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:16,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:16,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:25:16,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617085903] [2021-06-12 15:25:16,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:25:16,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:25:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:25:16,441 INFO L87 Difference]: Start difference. First operand 56970 states and 151347 transitions. Second operand has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:17,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:17,046 INFO L93 Difference]: Finished difference Result 80730 states and 213255 transitions. [2021-06-12 15:25:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:25:17,047 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-06-12 15:25:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:17,186 INFO L225 Difference]: With dead ends: 80730 [2021-06-12 15:25:17,187 INFO L226 Difference]: Without dead ends: 80730 [2021-06-12 15:25:17,188 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 254.8ms TimeCoverageRelationStatistics Valid=319, Invalid=941, Unknown=0, NotChecked=0, Total=1260 [2021-06-12 15:25:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80730 states. [2021-06-12 15:25:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80730 to 56970. [2021-06-12 15:25:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56970 states, 56968 states have (on average 2.6567020081449235) internal successors, (151347), 56969 states have internal predecessors, (151347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56970 states to 56970 states and 151347 transitions. [2021-06-12 15:25:18,374 INFO L78 Accepts]: Start accepts. Automaton has 56970 states and 151347 transitions. Word has length 339 [2021-06-12 15:25:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:18,374 INFO L482 AbstractCegarLoop]: Abstraction has 56970 states and 151347 transitions. [2021-06-12 15:25:18,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 56970 states and 151347 transitions. [2021-06-12 15:25:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-06-12 15:25:18,437 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:18,437 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:18,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-06-12 15:25:18,638 INFO L430 AbstractCegarLoop]: === Iteration 34 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1316490264, now seen corresponding path program 14 times [2021-06-12 15:25:18,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:18,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479959609] [2021-06-12 15:25:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:18,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:18,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479959609] [2021-06-12 15:25:18,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479959609] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:18,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546601888] [2021-06-12 15:25:18,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:19,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:25:19,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:19,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:19,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:20,169 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:25:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:20,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546601888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:20,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:20,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:25:20,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926242740] [2021-06-12 15:25:20,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:25:20,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:20,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:25:20,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:25:20,262 INFO L87 Difference]: Start difference. First operand 56970 states and 151347 transitions. Second operand has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:21,025 INFO L93 Difference]: Finished difference Result 83430 states and 220365 transitions. [2021-06-12 15:25:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:25:21,025 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-06-12 15:25:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:21,152 INFO L225 Difference]: With dead ends: 83430 [2021-06-12 15:25:21,152 INFO L226 Difference]: Without dead ends: 83430 [2021-06-12 15:25:21,153 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-06-12 15:25:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83430 states. [2021-06-12 15:25:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83430 to 58790. [2021-06-12 15:25:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58790 states, 58788 states have (on average 2.6581615295638565) internal successors, (156268), 58789 states have internal predecessors, (156268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58790 states to 58790 states and 156268 transitions. [2021-06-12 15:25:22,757 INFO L78 Accepts]: Start accepts. Automaton has 58790 states and 156268 transitions. Word has length 339 [2021-06-12 15:25:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:22,758 INFO L482 AbstractCegarLoop]: Abstraction has 58790 states and 156268 transitions. [2021-06-12 15:25:22,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 58790 states and 156268 transitions. [2021-06-12 15:25:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-06-12 15:25:22,841 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:22,842 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:23,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:23,065 INFO L430 AbstractCegarLoop]: === Iteration 35 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1868595604, now seen corresponding path program 15 times [2021-06-12 15:25:23,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:23,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074996771] [2021-06-12 15:25:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:23,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:23,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074996771] [2021-06-12 15:25:23,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074996771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:23,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169779209] [2021-06-12 15:25:23,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:23,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-12 15:25:23,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:23,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:24,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:24,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169779209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:24,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:24,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:25:24,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602405314] [2021-06-12 15:25:24,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:25:24,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:24,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:25:24,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:25:24,517 INFO L87 Difference]: Start difference. First operand 58790 states and 156268 transitions. Second operand has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:24,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:24,919 INFO L93 Difference]: Finished difference Result 86710 states and 229239 transitions. [2021-06-12 15:25:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:25:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-06-12 15:25:24,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:25,203 INFO L225 Difference]: With dead ends: 86710 [2021-06-12 15:25:25,203 INFO L226 Difference]: Without dead ends: 86710 [2021-06-12 15:25:25,203 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 257.2ms TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:25:25,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86710 states. [2021-06-12 15:25:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86710 to 60610. [2021-06-12 15:25:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60610 states, 60608 states have (on average 2.659533394931362) internal successors, (161189), 60609 states have internal predecessors, (161189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60610 states to 60610 states and 161189 transitions. [2021-06-12 15:25:26,178 INFO L78 Accepts]: Start accepts. Automaton has 60610 states and 161189 transitions. Word has length 339 [2021-06-12 15:25:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:26,179 INFO L482 AbstractCegarLoop]: Abstraction has 60610 states and 161189 transitions. [2021-06-12 15:25:26,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60610 states and 161189 transitions. [2021-06-12 15:25:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-06-12 15:25:26,476 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:26,476 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:26,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-12 15:25:26,701 INFO L430 AbstractCegarLoop]: === Iteration 36 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:26,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:26,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1730463080, now seen corresponding path program 16 times [2021-06-12 15:25:26,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:26,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035629515] [2021-06-12 15:25:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:26,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:26,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035629515] [2021-06-12 15:25:26,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035629515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:26,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471834306] [2021-06-12 15:25:26,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:27,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:25:27,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:27,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:27,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:27,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471834306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:27,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:27,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:25:27,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277349101] [2021-06-12 15:25:27,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:25:27,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:27,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:25:27,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:25:27,650 INFO L87 Difference]: Start difference. First operand 60610 states and 161189 transitions. Second operand has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:28,216 INFO L93 Difference]: Finished difference Result 88725 states and 234124 transitions. [2021-06-12 15:25:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-12 15:25:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-06-12 15:25:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:28,317 INFO L225 Difference]: With dead ends: 88725 [2021-06-12 15:25:28,317 INFO L226 Difference]: Without dead ends: 88725 [2021-06-12 15:25:28,317 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 391.1ms TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:25:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88725 states. [2021-06-12 15:25:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88725 to 67490. [2021-06-12 15:25:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67490 states, 67488 states have (on average 2.6655553579895686) internal successors, (179893), 67489 states have internal predecessors, (179893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67490 states to 67490 states and 179893 transitions. [2021-06-12 15:25:29,508 INFO L78 Accepts]: Start accepts. Automaton has 67490 states and 179893 transitions. Word has length 339 [2021-06-12 15:25:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:29,508 INFO L482 AbstractCegarLoop]: Abstraction has 67490 states and 179893 transitions. [2021-06-12 15:25:29,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 67490 states and 179893 transitions. [2021-06-12 15:25:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-06-12 15:25:29,584 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:29,584 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:29,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-06-12 15:25:29,790 INFO L430 AbstractCegarLoop]: === Iteration 37 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash -769311508, now seen corresponding path program 17 times [2021-06-12 15:25:29,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:29,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951377507] [2021-06-12 15:25:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:29,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:29,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951377507] [2021-06-12 15:25:29,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951377507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:29,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191080515] [2021-06-12 15:25:29,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:30,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-12 15:25:30,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:30,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:30,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191080515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:30,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:30,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:25:30,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472644331] [2021-06-12 15:25:30,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:25:30,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:30,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:25:30,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:25:30,860 INFO L87 Difference]: Start difference. First operand 67490 states and 179893 transitions. Second operand has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:31,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:31,256 INFO L93 Difference]: Finished difference Result 85430 states and 225749 transitions. [2021-06-12 15:25:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:25:31,256 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-06-12 15:25:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:31,362 INFO L225 Difference]: With dead ends: 85430 [2021-06-12 15:25:31,363 INFO L226 Difference]: Without dead ends: 85430 [2021-06-12 15:25:31,363 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 205.7ms TimeCoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2021-06-12 15:25:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85430 states. [2021-06-12 15:25:32,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85430 to 71470. [2021-06-12 15:25:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71470 states, 71468 states have (on average 2.6686349135277325) internal successors, (190722), 71469 states have internal predecessors, (190722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71470 states to 71470 states and 190722 transitions. [2021-06-12 15:25:32,577 INFO L78 Accepts]: Start accepts. Automaton has 71470 states and 190722 transitions. Word has length 339 [2021-06-12 15:25:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:32,578 INFO L482 AbstractCegarLoop]: Abstraction has 71470 states and 190722 transitions. [2021-06-12 15:25:32,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 71470 states and 190722 transitions. [2021-06-12 15:25:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-06-12 15:25:32,892 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:32,892 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:33,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-12 15:25:33,105 INFO L430 AbstractCegarLoop]: === Iteration 38 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:33,106 INFO L82 PathProgramCache]: Analyzing trace with hash -621644056, now seen corresponding path program 18 times [2021-06-12 15:25:33,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:33,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129396758] [2021-06-12 15:25:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 828 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:25:33,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:33,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129396758] [2021-06-12 15:25:33,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129396758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:33,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052747411] [2021-06-12 15:25:33,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:33,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-12 15:25:33,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:33,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:25:33,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 21 proven. 805 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:25:33,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052747411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:33,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:33,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 18 [2021-06-12 15:25:33,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381974186] [2021-06-12 15:25:33,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:25:33,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:25:33,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:25:33,970 INFO L87 Difference]: Start difference. First operand 71470 states and 190722 transitions. Second operand has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:34,562 INFO L93 Difference]: Finished difference Result 82005 states and 217163 transitions. [2021-06-12 15:25:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:25:34,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-06-12 15:25:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:34,651 INFO L225 Difference]: With dead ends: 82005 [2021-06-12 15:25:34,651 INFO L226 Difference]: Without dead ends: 82005 [2021-06-12 15:25:34,652 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 209.4ms TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:25:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82005 states. [2021-06-12 15:25:35,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82005 to 70390. [2021-06-12 15:25:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70390 states, 70388 states have (on average 2.6676137978064443) internal successors, (187768), 70389 states have internal predecessors, (187768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70390 states to 70390 states and 187768 transitions. [2021-06-12 15:25:35,813 INFO L78 Accepts]: Start accepts. Automaton has 70390 states and 187768 transitions. Word has length 339 [2021-06-12 15:25:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:35,813 INFO L482 AbstractCegarLoop]: Abstraction has 70390 states and 187768 transitions. [2021-06-12 15:25:35,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.72222222222222) internal successors, (355), 18 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 70390 states and 187768 transitions. [2021-06-12 15:25:35,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-06-12 15:25:35,892 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:35,893 INFO L472 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:36,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-12 15:25:36,093 INFO L430 AbstractCegarLoop]: === Iteration 39 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash 165063693, now seen corresponding path program 9 times [2021-06-12 15:25:36,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:36,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870536498] [2021-06-12 15:25:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 27 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:25:36,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:36,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870536498] [2021-06-12 15:25:36,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870536498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:36,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944518338] [2021-06-12 15:25:36,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:36,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-12 15:25:36,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:36,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:36,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 27 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:25:37,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944518338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:37,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:37,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-12 15:25:37,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617926533] [2021-06-12 15:25:37,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-12 15:25:37,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:37,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-12 15:25:37,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:25:37,384 INFO L87 Difference]: Start difference. First operand 70390 states and 187768 transitions. Second operand has 23 states, 23 states have (on average 18.08695652173913) internal successors, (416), 23 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:37,867 INFO L93 Difference]: Finished difference Result 80742 states and 214130 transitions. [2021-06-12 15:25:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 15:25:37,868 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 18.08695652173913) internal successors, (416), 23 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 369 [2021-06-12 15:25:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:38,122 INFO L225 Difference]: With dead ends: 80742 [2021-06-12 15:25:38,122 INFO L226 Difference]: Without dead ends: 80742 [2021-06-12 15:25:38,123 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 327.5ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 15:25:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80742 states. [2021-06-12 15:25:38,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80742 to 73705. [2021-06-12 15:25:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73705 states, 73703 states have (on average 2.6657802260423593) internal successors, (196476), 73704 states have internal predecessors, (196476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73705 states to 73705 states and 196476 transitions. [2021-06-12 15:25:39,358 INFO L78 Accepts]: Start accepts. Automaton has 73705 states and 196476 transitions. Word has length 369 [2021-06-12 15:25:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:39,358 INFO L482 AbstractCegarLoop]: Abstraction has 73705 states and 196476 transitions. [2021-06-12 15:25:39,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 18.08695652173913) internal successors, (416), 23 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 73705 states and 196476 transitions. [2021-06-12 15:25:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:25:39,457 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:39,457 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:39,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-12 15:25:39,658 INFO L430 AbstractCegarLoop]: === Iteration 40 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:39,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1927766189, now seen corresponding path program 9 times [2021-06-12 15:25:39,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:39,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390075355] [2021-06-12 15:25:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:39,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:39,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390075355] [2021-06-12 15:25:39,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390075355] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:39,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914273725] [2021-06-12 15:25:39,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:40,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-12 15:25:40,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:40,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:40,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:40,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914273725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:40,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:40,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:25:40,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058965383] [2021-06-12 15:25:40,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:25:40,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:40,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:25:40,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:25:40,637 INFO L87 Difference]: Start difference. First operand 73705 states and 196476 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:41,252 INFO L93 Difference]: Finished difference Result 96845 states and 256215 transitions. [2021-06-12 15:25:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-12 15:25:41,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:25:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:41,378 INFO L225 Difference]: With dead ends: 96845 [2021-06-12 15:25:41,378 INFO L226 Difference]: Without dead ends: 96845 [2021-06-12 15:25:41,379 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 200.4ms TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:25:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96845 states. [2021-06-12 15:25:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96845 to 71885. [2021-06-12 15:25:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71885 states, 71883 states have (on average 2.664816437822573) internal successors, (191555), 71884 states have internal predecessors, (191555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71885 states to 71885 states and 191555 transitions. [2021-06-12 15:25:42,943 INFO L78 Accepts]: Start accepts. Automaton has 71885 states and 191555 transitions. Word has length 373 [2021-06-12 15:25:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:42,944 INFO L482 AbstractCegarLoop]: Abstraction has 71885 states and 191555 transitions. [2021-06-12 15:25:42,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 71885 states and 191555 transitions. [2021-06-12 15:25:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:25:43,081 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:43,081 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:43,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-12 15:25:43,282 INFO L430 AbstractCegarLoop]: === Iteration 41 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1170713125, now seen corresponding path program 10 times [2021-06-12 15:25:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:43,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926949017] [2021-06-12 15:25:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:43,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:43,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926949017] [2021-06-12 15:25:43,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926949017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:43,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231019140] [2021-06-12 15:25:43,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:43,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:25:43,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:43,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:43,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:44,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231019140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:44,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:44,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:25:44,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146377783] [2021-06-12 15:25:44,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:25:44,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:44,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:25:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:25:44,038 INFO L87 Difference]: Start difference. First operand 71885 states and 191555 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:44,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:44,680 INFO L93 Difference]: Finished difference Result 111885 states and 296684 transitions. [2021-06-12 15:25:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:25:44,680 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:25:44,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:44,823 INFO L225 Difference]: With dead ends: 111885 [2021-06-12 15:25:44,823 INFO L226 Difference]: Without dead ends: 111885 [2021-06-12 15:25:44,823 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 194.7ms TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2021-06-12 15:25:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111885 states. [2021-06-12 15:25:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111885 to 72965. [2021-06-12 15:25:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72965 states, 72963 states have (on average 2.665858037635514) internal successors, (194509), 72964 states have internal predecessors, (194509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72965 states to 72965 states and 194509 transitions. [2021-06-12 15:25:46,517 INFO L78 Accepts]: Start accepts. Automaton has 72965 states and 194509 transitions. Word has length 373 [2021-06-12 15:25:46,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:46,517 INFO L482 AbstractCegarLoop]: Abstraction has 72965 states and 194509 transitions. [2021-06-12 15:25:46,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:46,518 INFO L276 IsEmpty]: Start isEmpty. Operand 72965 states and 194509 transitions. [2021-06-12 15:25:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:25:46,643 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:46,643 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:46,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-06-12 15:25:46,844 INFO L430 AbstractCegarLoop]: === Iteration 42 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:46,844 INFO L82 PathProgramCache]: Analyzing trace with hash 45434247, now seen corresponding path program 11 times [2021-06-12 15:25:46,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:46,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112982363] [2021-06-12 15:25:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:46,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:46,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112982363] [2021-06-12 15:25:46,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112982363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:46,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355315438] [2021-06-12 15:25:46,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:47,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-12 15:25:47,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:47,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:47,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:47,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355315438] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:47,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:47,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:25:47,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258976720] [2021-06-12 15:25:47,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:25:47,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:47,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:25:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:25:47,701 INFO L87 Difference]: Start difference. First operand 72965 states and 194509 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:48,333 INFO L93 Difference]: Finished difference Result 99130 states and 261670 transitions. [2021-06-12 15:25:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:25:48,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:25:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:48,474 INFO L225 Difference]: With dead ends: 99130 [2021-06-12 15:25:48,474 INFO L226 Difference]: Without dead ends: 99130 [2021-06-12 15:25:48,475 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 386.5ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-06-12 15:25:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99130 states. [2021-06-12 15:25:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99130 to 76125. [2021-06-12 15:25:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76125 states, 76123 states have (on average 2.6673541505195537) internal successors, (203047), 76124 states have internal predecessors, (203047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76125 states to 76125 states and 203047 transitions. [2021-06-12 15:25:49,812 INFO L78 Accepts]: Start accepts. Automaton has 76125 states and 203047 transitions. Word has length 373 [2021-06-12 15:25:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:49,813 INFO L482 AbstractCegarLoop]: Abstraction has 76125 states and 203047 transitions. [2021-06-12 15:25:49,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 76125 states and 203047 transitions. [2021-06-12 15:25:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:25:49,899 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:49,899 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:50,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:50,100 INFO L430 AbstractCegarLoop]: === Iteration 43 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:50,100 INFO L82 PathProgramCache]: Analyzing trace with hash 194850221, now seen corresponding path program 12 times [2021-06-12 15:25:50,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:50,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134009191] [2021-06-12 15:25:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:50,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:50,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134009191] [2021-06-12 15:25:50,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134009191] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:50,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972150847] [2021-06-12 15:25:50,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:50,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-12 15:25:50,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:50,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:50,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:51,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972150847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:51,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:51,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:25:51,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267397829] [2021-06-12 15:25:51,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:25:51,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:25:51,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:25:51,394 INFO L87 Difference]: Start difference. First operand 76125 states and 203047 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:52,068 INFO L93 Difference]: Finished difference Result 115565 states and 306636 transitions. [2021-06-12 15:25:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:25:52,069 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:25:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:52,215 INFO L225 Difference]: With dead ends: 115565 [2021-06-12 15:25:52,216 INFO L226 Difference]: Without dead ends: 115565 [2021-06-12 15:25:52,216 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 247.1ms TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2021-06-12 15:25:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115565 states. [2021-06-12 15:25:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115565 to 77205. [2021-06-12 15:25:53,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77205 states, 77203 states have (on average 2.66830304521845) internal successors, (206001), 77204 states have internal predecessors, (206001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77205 states to 77205 states and 206001 transitions. [2021-06-12 15:25:53,606 INFO L78 Accepts]: Start accepts. Automaton has 77205 states and 206001 transitions. Word has length 373 [2021-06-12 15:25:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:53,606 INFO L482 AbstractCegarLoop]: Abstraction has 77205 states and 206001 transitions. [2021-06-12 15:25:53,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 77205 states and 206001 transitions. [2021-06-12 15:25:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:25:53,985 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:53,985 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:54,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:54,205 INFO L430 AbstractCegarLoop]: === Iteration 44 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:54,205 INFO L82 PathProgramCache]: Analyzing trace with hash -930428657, now seen corresponding path program 13 times [2021-06-12 15:25:54,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:54,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474768489] [2021-06-12 15:25:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:54,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:54,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474768489] [2021-06-12 15:25:54,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474768489] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:54,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514249570] [2021-06-12 15:25:54,351 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:54,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:54,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514249570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:54,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:54,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:25:54,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790820949] [2021-06-12 15:25:54,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:25:54,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:54,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:25:54,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:25:54,902 INFO L87 Difference]: Start difference. First operand 77205 states and 206001 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:55,628 INFO L93 Difference]: Finished difference Result 115715 states and 307239 transitions. [2021-06-12 15:25:55,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:25:55,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:25:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:55,836 INFO L225 Difference]: With dead ends: 115715 [2021-06-12 15:25:55,836 INFO L226 Difference]: Without dead ends: 115715 [2021-06-12 15:25:55,838 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 184.1ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-12 15:25:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115715 states. [2021-06-12 15:25:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115715 to 79025. [2021-06-12 15:25:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79025 states, 79023 states have (on average 2.6691216481277604) internal successors, (210922), 79024 states have internal predecessors, (210922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79025 states to 79025 states and 210922 transitions. [2021-06-12 15:25:57,290 INFO L78 Accepts]: Start accepts. Automaton has 79025 states and 210922 transitions. Word has length 373 [2021-06-12 15:25:57,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:57,290 INFO L482 AbstractCegarLoop]: Abstraction has 79025 states and 210922 transitions. [2021-06-12 15:25:57,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 79025 states and 210922 transitions. [2021-06-12 15:25:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:25:57,666 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:57,666 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:25:57,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:57,893 INFO L430 AbstractCegarLoop]: === Iteration 45 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2083331475, now seen corresponding path program 14 times [2021-06-12 15:25:57,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:57,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585306086] [2021-06-12 15:25:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:58,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:58,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585306086] [2021-06-12 15:25:58,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585306086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:58,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385458167] [2021-06-12 15:25:58,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:58,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:25:58,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:58,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:58,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:25:58,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385458167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:58,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:58,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:25:58,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573554770] [2021-06-12 15:25:58,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:25:58,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:58,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:25:58,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:25:58,679 INFO L87 Difference]: Start difference. First operand 79025 states and 210922 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:25:59,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:59,312 INFO L93 Difference]: Finished difference Result 100250 states and 264700 transitions. [2021-06-12 15:25:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:25:59,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:25:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:59,439 INFO L225 Difference]: With dead ends: 100250 [2021-06-12 15:25:59,439 INFO L226 Difference]: Without dead ends: 100250 [2021-06-12 15:25:59,439 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 185.1ms TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2021-06-12 15:25:59,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100250 states. [2021-06-12 15:26:00,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100250 to 76125. [2021-06-12 15:26:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76125 states, 76123 states have (on average 2.6673541505195537) internal successors, (203047), 76124 states have internal predecessors, (203047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76125 states to 76125 states and 203047 transitions. [2021-06-12 15:26:00,733 INFO L78 Accepts]: Start accepts. Automaton has 76125 states and 203047 transitions. Word has length 373 [2021-06-12 15:26:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:00,733 INFO L482 AbstractCegarLoop]: Abstraction has 76125 states and 203047 transitions. [2021-06-12 15:26:00,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:00,733 INFO L276 IsEmpty]: Start isEmpty. Operand 76125 states and 203047 transitions. [2021-06-12 15:26:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:26:00,820 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:00,820 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:01,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-06-12 15:26:01,021 INFO L430 AbstractCegarLoop]: === Iteration 46 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:01,021 INFO L82 PathProgramCache]: Analyzing trace with hash 689356069, now seen corresponding path program 15 times [2021-06-12 15:26:01,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:01,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656997772] [2021-06-12 15:26:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 824 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:26:01,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:01,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656997772] [2021-06-12 15:26:01,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656997772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:01,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513440961] [2021-06-12 15:26:01,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:01,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-12 15:26:01,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:01,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:01,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:26:02,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513440961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:02,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:02,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:26:02,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100868183] [2021-06-12 15:26:02,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:26:02,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:02,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:26:02,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:26:02,264 INFO L87 Difference]: Start difference. First operand 76125 states and 203047 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:02,927 INFO L93 Difference]: Finished difference Result 108675 states and 288358 transitions. [2021-06-12 15:26:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:26:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:26:02,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:03,052 INFO L225 Difference]: With dead ends: 108675 [2021-06-12 15:26:03,053 INFO L226 Difference]: Without dead ends: 108675 [2021-06-12 15:26:03,053 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 528.1ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-06-12 15:26:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108675 states. [2021-06-12 15:26:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108675 to 76125. [2021-06-12 15:26:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76125 states, 76123 states have (on average 2.6673541505195537) internal successors, (203047), 76124 states have internal predecessors, (203047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76125 states to 76125 states and 203047 transitions. [2021-06-12 15:26:04,346 INFO L78 Accepts]: Start accepts. Automaton has 76125 states and 203047 transitions. Word has length 373 [2021-06-12 15:26:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:04,347 INFO L482 AbstractCegarLoop]: Abstraction has 76125 states and 203047 transitions. [2021-06-12 15:26:04,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 76125 states and 203047 transitions. [2021-06-12 15:26:04,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:26:04,430 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:04,431 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:04,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:04,631 INFO L430 AbstractCegarLoop]: === Iteration 47 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash -435922809, now seen corresponding path program 16 times [2021-06-12 15:26:04,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:04,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579220981] [2021-06-12 15:26:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 824 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:26:05,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:05,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579220981] [2021-06-12 15:26:05,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579220981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:05,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085798648] [2021-06-12 15:26:05,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:05,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:26:05,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:05,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:05,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:26:05,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085798648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:05,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:05,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:26:05,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019125025] [2021-06-12 15:26:05,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:26:05,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:05,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:26:05,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:26:05,895 INFO L87 Difference]: Start difference. First operand 76125 states and 203047 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:06,739 INFO L93 Difference]: Finished difference Result 110765 states and 293455 transitions. [2021-06-12 15:26:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:26:06,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:26:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:06,909 INFO L225 Difference]: With dead ends: 110765 [2021-06-12 15:26:06,909 INFO L226 Difference]: Without dead ends: 110765 [2021-06-12 15:26:06,909 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 267.8ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:26:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110765 states. [2021-06-12 15:26:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110765 to 75045. [2021-06-12 15:26:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75045 states, 75043 states have (on average 2.6663779433125008) internal successors, (200093), 75044 states have internal predecessors, (200093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75045 states to 75045 states and 200093 transitions. [2021-06-12 15:26:08,238 INFO L78 Accepts]: Start accepts. Automaton has 75045 states and 200093 transitions. Word has length 373 [2021-06-12 15:26:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:08,239 INFO L482 AbstractCegarLoop]: Abstraction has 75045 states and 200093 transitions. [2021-06-12 15:26:08,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 75045 states and 200093 transitions. [2021-06-12 15:26:08,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:26:08,324 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:08,324 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:08,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:08,525 INFO L430 AbstractCegarLoop]: === Iteration 48 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1588825627, now seen corresponding path program 17 times [2021-06-12 15:26:08,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:08,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331067012] [2021-06-12 15:26:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 824 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:26:09,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:09,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331067012] [2021-06-12 15:26:09,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331067012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:09,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944113749] [2021-06-12 15:26:09,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:09,454 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-12 15:26:09,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:09,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:09,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:26:09,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944113749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:09,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:09,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:26:09,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966885278] [2021-06-12 15:26:09,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:26:09,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:09,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:26:09,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:26:09,864 INFO L87 Difference]: Start difference. First operand 75045 states and 200093 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:10,536 INFO L93 Difference]: Finished difference Result 108165 states and 286375 transitions. [2021-06-12 15:26:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:26:10,537 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:26:10,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:10,661 INFO L225 Difference]: With dead ends: 108165 [2021-06-12 15:26:10,661 INFO L226 Difference]: Without dead ends: 108165 [2021-06-12 15:26:10,662 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 537.6ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:26:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108165 states. [2021-06-12 15:26:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108165 to 78685. [2021-06-12 15:26:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78685 states, 78683 states have (on average 2.668111281979589) internal successors, (209935), 78684 states have internal predecessors, (209935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78685 states to 78685 states and 209935 transitions. [2021-06-12 15:26:11,961 INFO L78 Accepts]: Start accepts. Automaton has 78685 states and 209935 transitions. Word has length 373 [2021-06-12 15:26:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:11,961 INFO L482 AbstractCegarLoop]: Abstraction has 78685 states and 209935 transitions. [2021-06-12 15:26:11,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 78685 states and 209935 transitions. [2021-06-12 15:26:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-06-12 15:26:12,052 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:12,052 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:12,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-06-12 15:26:12,265 INFO L430 AbstractCegarLoop]: === Iteration 49 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1128502329, now seen corresponding path program 18 times [2021-06-12 15:26:12,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:12,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177198313] [2021-06-12 15:26:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 824 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-06-12 15:26:12,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:12,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177198313] [2021-06-12 15:26:12,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177198313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:12,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74630671] [2021-06-12 15:26:12,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:13,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-12 15:26:13,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:13,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:13,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 21 proven. 801 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-06-12 15:26:13,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74630671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:13,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:13,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:26:13,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199165157] [2021-06-12 15:26:13,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:26:13,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:26:13,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:26:13,404 INFO L87 Difference]: Start difference. First operand 78685 states and 209935 transitions. Second operand has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:14,024 INFO L93 Difference]: Finished difference Result 100025 states and 264232 transitions. [2021-06-12 15:26:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:26:14,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-06-12 15:26:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:14,134 INFO L225 Difference]: With dead ends: 100025 [2021-06-12 15:26:14,134 INFO L226 Difference]: Without dead ends: 100025 [2021-06-12 15:26:14,135 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 189.3ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:26:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100025 states. [2021-06-12 15:26:15,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100025 to 82925. [2021-06-12 15:26:15,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82925 states, 82923 states have (on average 2.6702724214029883) internal successors, (221427), 82924 states have internal predecessors, (221427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82925 states to 82925 states and 221427 transitions. [2021-06-12 15:26:15,429 INFO L78 Accepts]: Start accepts. Automaton has 82925 states and 221427 transitions. Word has length 373 [2021-06-12 15:26:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:15,430 INFO L482 AbstractCegarLoop]: Abstraction has 82925 states and 221427 transitions. [2021-06-12 15:26:15,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.823529411764707) internal successors, (354), 17 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 82925 states and 221427 transitions. [2021-06-12 15:26:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:15,523 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:15,523 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:15,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-12 15:26:15,724 INFO L430 AbstractCegarLoop]: === Iteration 50 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash 328814900, now seen corresponding path program 19 times [2021-06-12 15:26:15,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:15,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265071861] [2021-06-12 15:26:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:16,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:16,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265071861] [2021-06-12 15:26:16,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265071861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:16,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696507362] [2021-06-12 15:26:16,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:16,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:16,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:16,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696507362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:16,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:16,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:26:16,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362495291] [2021-06-12 15:26:16,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:16,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:16,774 INFO L87 Difference]: Start difference. First operand 82925 states and 221427 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:17,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:17,472 INFO L93 Difference]: Finished difference Result 106480 states and 282217 transitions. [2021-06-12 15:26:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 15:26:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:17,608 INFO L225 Difference]: With dead ends: 106480 [2021-06-12 15:26:17,608 INFO L226 Difference]: Without dead ends: 106480 [2021-06-12 15:26:17,608 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 315.9ms TimeCoverageRelationStatistics Valid=412, Invalid=1228, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 15:26:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106480 states. [2021-06-12 15:26:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106480 to 82925. [2021-06-12 15:26:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82925 states, 82923 states have (on average 2.6702724214029883) internal successors, (221427), 82924 states have internal predecessors, (221427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82925 states to 82925 states and 221427 transitions. [2021-06-12 15:26:18,980 INFO L78 Accepts]: Start accepts. Automaton has 82925 states and 221427 transitions. Word has length 374 [2021-06-12 15:26:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:18,981 INFO L482 AbstractCegarLoop]: Abstraction has 82925 states and 221427 transitions. [2021-06-12 15:26:18,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 82925 states and 221427 transitions. [2021-06-12 15:26:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:19,074 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:19,074 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:19,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-06-12 15:26:19,275 INFO L430 AbstractCegarLoop]: === Iteration 51 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash -955488976, now seen corresponding path program 20 times [2021-06-12 15:26:19,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:19,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218945672] [2021-06-12 15:26:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:19,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:19,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218945672] [2021-06-12 15:26:19,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218945672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:19,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764168824] [2021-06-12 15:26:19,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:19,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:26:19,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:19,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:19,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:20,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764168824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:20,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:20,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:26:20,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238094371] [2021-06-12 15:26:20,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:20,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:20,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:20,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:20,398 INFO L87 Difference]: Start difference. First operand 82925 states and 221427 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:21,180 INFO L93 Difference]: Finished difference Result 109145 states and 289012 transitions. [2021-06-12 15:26:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 15:26:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:21,330 INFO L225 Difference]: With dead ends: 109145 [2021-06-12 15:26:21,330 INFO L226 Difference]: Without dead ends: 109145 [2021-06-12 15:26:21,331 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 327.9ms TimeCoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 15:26:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109145 states. [2021-06-12 15:26:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109145 to 82925. [2021-06-12 15:26:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82925 states, 82923 states have (on average 2.6702724214029883) internal successors, (221427), 82924 states have internal predecessors, (221427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:22,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82925 states to 82925 states and 221427 transitions. [2021-06-12 15:26:22,742 INFO L78 Accepts]: Start accepts. Automaton has 82925 states and 221427 transitions. Word has length 374 [2021-06-12 15:26:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:22,742 INFO L482 AbstractCegarLoop]: Abstraction has 82925 states and 221427 transitions. [2021-06-12 15:26:22,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 82925 states and 221427 transitions. [2021-06-12 15:26:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:23,138 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:23,138 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:23,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:23,339 INFO L430 AbstractCegarLoop]: === Iteration 52 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:23,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1507594316, now seen corresponding path program 21 times [2021-06-12 15:26:23,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:23,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849813085] [2021-06-12 15:26:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:23,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:23,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849813085] [2021-06-12 15:26:23,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849813085] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:23,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233399989] [2021-06-12 15:26:23,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:23,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-12 15:26:23,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:23,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:23,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:24,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233399989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:24,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:24,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:26:24,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311896892] [2021-06-12 15:26:24,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:24,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:24,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:24,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:24,301 INFO L87 Difference]: Start difference. First operand 82925 states and 221427 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:25,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:25,012 INFO L93 Difference]: Finished difference Result 111730 states and 295808 transitions. [2021-06-12 15:26:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 15:26:25,013 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:25,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:25,152 INFO L225 Difference]: With dead ends: 111730 [2021-06-12 15:26:25,152 INFO L226 Difference]: Without dead ends: 111730 [2021-06-12 15:26:25,152 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 269.1ms TimeCoverageRelationStatistics Valid=392, Invalid=1090, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 15:26:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111730 states. [2021-06-12 15:26:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111730 to 84745. [2021-06-12 15:26:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84745 states, 84743 states have (on average 2.670993474387265) internal successors, (226348), 84744 states have internal predecessors, (226348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84745 states to 84745 states and 226348 transitions. [2021-06-12 15:26:26,583 INFO L78 Accepts]: Start accepts. Automaton has 84745 states and 226348 transitions. Word has length 374 [2021-06-12 15:26:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:26,583 INFO L482 AbstractCegarLoop]: Abstraction has 84745 states and 226348 transitions. [2021-06-12 15:26:26,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 84745 states and 226348 transitions. [2021-06-12 15:26:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:27,156 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:27,156 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:27,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:27,377 INFO L430 AbstractCegarLoop]: === Iteration 53 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2091464368, now seen corresponding path program 22 times [2021-06-12 15:26:27,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:27,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436777540] [2021-06-12 15:26:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:27,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:27,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436777540] [2021-06-12 15:26:27,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436777540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:27,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763946916] [2021-06-12 15:26:27,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:28,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:26:28,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:28,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:28,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:28,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763946916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:28,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:28,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:26:28,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145788720] [2021-06-12 15:26:28,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:28,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:28,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:28,660 INFO L87 Difference]: Start difference. First operand 84745 states and 226348 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:29,250 INFO L93 Difference]: Finished difference Result 111965 states and 296607 transitions. [2021-06-12 15:26:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 15:26:29,250 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:29,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:29,392 INFO L225 Difference]: With dead ends: 111965 [2021-06-12 15:26:29,392 INFO L226 Difference]: Without dead ends: 111965 [2021-06-12 15:26:29,392 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 270.1ms TimeCoverageRelationStatistics Valid=382, Invalid=1024, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 15:26:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111965 states. [2021-06-12 15:26:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111965 to 88725. [2021-06-12 15:26:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88725 states, 88723 states have (on average 2.6732301657969186) internal successors, (237177), 88724 states have internal predecessors, (237177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:31,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88725 states to 88725 states and 237177 transitions. [2021-06-12 15:26:31,118 INFO L78 Accepts]: Start accepts. Automaton has 88725 states and 237177 transitions. Word has length 374 [2021-06-12 15:26:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:31,119 INFO L482 AbstractCegarLoop]: Abstraction has 88725 states and 237177 transitions. [2021-06-12 15:26:31,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 88725 states and 237177 transitions. [2021-06-12 15:26:31,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:31,239 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:31,239 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:31,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-12 15:26:31,453 INFO L430 AbstractCegarLoop]: === Iteration 54 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash -408310220, now seen corresponding path program 23 times [2021-06-12 15:26:31,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:31,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291565386] [2021-06-12 15:26:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:31,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:31,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291565386] [2021-06-12 15:26:31,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291565386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:31,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320348325] [2021-06-12 15:26:31,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:31,919 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-06-12 15:26:31,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:31,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:31,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:32,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320348325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:32,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:32,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:26:32,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189799144] [2021-06-12 15:26:32,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:32,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:32,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:32,368 INFO L87 Difference]: Start difference. First operand 88725 states and 237177 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:33,095 INFO L93 Difference]: Finished difference Result 113460 states and 300078 transitions. [2021-06-12 15:26:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:26:33,096 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:33,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:33,233 INFO L225 Difference]: With dead ends: 113460 [2021-06-12 15:26:33,233 INFO L226 Difference]: Without dead ends: 113460 [2021-06-12 15:26:33,234 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 256.9ms TimeCoverageRelationStatistics Valid=372, Invalid=960, Unknown=0, NotChecked=0, Total=1332 [2021-06-12 15:26:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113460 states. [2021-06-12 15:26:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113460 to 91625. [2021-06-12 15:26:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91625 states, 91623 states have (on average 2.674568612684588) internal successors, (245052), 91624 states have internal predecessors, (245052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91625 states to 91625 states and 245052 transitions. [2021-06-12 15:26:34,981 INFO L78 Accepts]: Start accepts. Automaton has 91625 states and 245052 transitions. Word has length 374 [2021-06-12 15:26:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:34,981 INFO L482 AbstractCegarLoop]: Abstraction has 91625 states and 245052 transitions. [2021-06-12 15:26:34,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 91625 states and 245052 transitions. [2021-06-12 15:26:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:35,083 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:35,083 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:35,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:35,283 INFO L430 AbstractCegarLoop]: === Iteration 55 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash -260642768, now seen corresponding path program 24 times [2021-06-12 15:26:35,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:35,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899465597] [2021-06-12 15:26:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:35,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:35,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899465597] [2021-06-12 15:26:35,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899465597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:35,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372664886] [2021-06-12 15:26:35,468 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:35,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-06-12 15:26:35,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:26:35,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:35,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:36,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372664886] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:36,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:36,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:26:36,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636231322] [2021-06-12 15:26:36,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:36,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:36,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:36,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:36,644 INFO L87 Difference]: Start difference. First operand 91625 states and 245052 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:37,171 INFO L93 Difference]: Finished difference Result 109560 states and 290274 transitions. [2021-06-12 15:26:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:26:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:37,320 INFO L225 Difference]: With dead ends: 109560 [2021-06-12 15:26:37,320 INFO L226 Difference]: Without dead ends: 109560 [2021-06-12 15:26:37,321 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 252.2ms TimeCoverageRelationStatistics Valid=362, Invalid=898, Unknown=0, NotChecked=0, Total=1260 [2021-06-12 15:26:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109560 states. [2021-06-12 15:26:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109560 to 91625. [2021-06-12 15:26:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91625 states, 91623 states have (on average 2.674568612684588) internal successors, (245052), 91624 states have internal predecessors, (245052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:39,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91625 states to 91625 states and 245052 transitions. [2021-06-12 15:26:39,004 INFO L78 Accepts]: Start accepts. Automaton has 91625 states and 245052 transitions. Word has length 374 [2021-06-12 15:26:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:39,005 INFO L482 AbstractCegarLoop]: Abstraction has 91625 states and 245052 transitions. [2021-06-12 15:26:39,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:39,005 INFO L276 IsEmpty]: Start isEmpty. Operand 91625 states and 245052 transitions. [2021-06-12 15:26:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-06-12 15:26:39,108 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:39,108 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:39,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-06-12 15:26:39,309 INFO L430 AbstractCegarLoop]: === Iteration 56 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:39,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1907192652, now seen corresponding path program 25 times [2021-06-12 15:26:39,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:39,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073236994] [2021-06-12 15:26:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1088 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:26:39,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:39,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073236994] [2021-06-12 15:26:39,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073236994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:39,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878145798] [2021-06-12 15:26:39,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:26:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:40,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:26:40,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:26:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 24 proven. 1065 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:26:40,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878145798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:40,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:26:40,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 20 [2021-06-12 15:26:40,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963481962] [2021-06-12 15:26:40,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:26:40,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:26:40,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:26:40,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:26:40,418 INFO L87 Difference]: Start difference. First operand 91625 states and 245052 transitions. Second operand has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:26:41,182 INFO L93 Difference]: Finished difference Result 104450 states and 277305 transitions. [2021-06-12 15:26:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 15:26:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-06-12 15:26:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:26:41,309 INFO L225 Difference]: With dead ends: 104450 [2021-06-12 15:26:41,309 INFO L226 Difference]: Without dead ends: 104450 [2021-06-12 15:26:41,310 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 643.6ms TimeCoverageRelationStatistics Valid=425, Invalid=981, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 15:26:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104450 states. [2021-06-12 15:26:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104450 to 89465. [2021-06-12 15:26:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89465 states, 89463 states have (on average 2.6731050825480924) internal successors, (239144), 89464 states have internal predecessors, (239144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89465 states to 89465 states and 239144 transitions. [2021-06-12 15:26:42,680 INFO L78 Accepts]: Start accepts. Automaton has 89465 states and 239144 transitions. Word has length 374 [2021-06-12 15:26:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:26:42,680 INFO L482 AbstractCegarLoop]: Abstraction has 89465 states and 239144 transitions. [2021-06-12 15:26:42,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.5) internal successors, (390), 20 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:26:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 89465 states and 239144 transitions. [2021-06-12 15:26:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-06-12 15:26:43,098 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:26:43,098 INFO L472 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:26:43,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-12 15:26:43,313 INFO L430 AbstractCegarLoop]: === Iteration 57 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:26:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:26:43,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1195549329, now seen corresponding path program 10 times [2021-06-12 15:26:43,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:26:43,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683973409] [2021-06-12 15:26:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:26:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:26:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 30 proven. 1725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:26:43,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:26:43,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683973409] [2021-06-12 15:26:43,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683973409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:26:43,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569307293] [2021-06-12 15:26:43,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true