/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_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 15:23:17,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 15:23:17,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 15:23:17,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 15:23:17,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 15:23:17,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 15:23:17,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 15:23:17,673 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 15:23:17,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 15:23:17,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 15:23:17,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 15:23:17,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 15:23:17,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 15:23:17,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 15:23:17,714 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 15:23:17,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 15:23:17,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 15:23:17,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 15:23:17,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 15:23:17,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 15:23:17,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 15:23:17,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 15:23:17,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 15:23:17,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 15:23:17,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 15:23:17,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 15:23:17,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 15:23:17,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 15:23:17,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 15:23:17,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 15:23:17,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 15:23:17,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 15:23:17,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 15:23:17,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 15:23:17,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 15:23:17,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 15:23:17,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 15:23:17,981 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 15:23:17,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2021-06-12 15:23:18,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d994d26/0fc14959bc63471fa8f41e9465944be1/FLAG5697a2915 [2021-06-12 15:23:18,491 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 15:23:18,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2021-06-12 15:23:18,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d994d26/0fc14959bc63471fa8f41e9465944be1/FLAG5697a2915 [2021-06-12 15:23:19,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d994d26/0fc14959bc63471fa8f41e9465944be1 [2021-06-12 15:23:19,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 15:23:19,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 15:23:19,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 15:23:19,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 15:23:19,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 15:23:19,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd557c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19, skipping insertion in model container [2021-06-12 15:23:19,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 15:23:19,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 15:23:19,357 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_longer-2.i[41529,41542] [2021-06-12 15:23:19,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:23:19,391 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 15:23:19,418 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_longer-2.i[41529,41542] [2021-06-12 15:23:19,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:23:19,510 INFO L208 MainTranslator]: Completed translation [2021-06-12 15:23:19,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19 WrapperNode [2021-06-12 15:23:19,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 15:23:19,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 15:23:19,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 15:23:19,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 15:23:19,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 15:23:19,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 15:23:19,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 15:23:19,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 15:23:19,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (1/1) ... [2021-06-12 15:23:19,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 15:23:19,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 15:23:19,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 15:23:19,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 15:23:19,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (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 15:23:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-12 15:23:19,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-12 15:23:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-12 15:23:19,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-12 15:23:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 15:23:19,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 15:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-12 15:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 15:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-12 15:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 15:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 15:23:19,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 15:23:19,666 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 15:23:19,998 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 15:23:19,998 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-06-12 15:23:20,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:23:20 BoogieIcfgContainer [2021-06-12 15:23:20,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 15:23:20,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 15:23:20,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 15:23:20,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 15:23:20,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 03:23:19" (1/3) ... [2021-06-12 15:23:20,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6c4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:23:20, skipping insertion in model container [2021-06-12 15:23:20,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:23:19" (2/3) ... [2021-06-12 15:23:20,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6c4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:23:20, skipping insertion in model container [2021-06-12 15:23:20,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:23:20" (3/3) ... [2021-06-12 15:23:20,006 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2021-06-12 15:23:20,009 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 15:23:20,009 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 15:23:20,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-12 15:23:20,010 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 15:23:20,031 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,032 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,033 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,034 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,035 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,036 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,037 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,038 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,039 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,042 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,045 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,045 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,045 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,045 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,045 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,046 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,047 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,048 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,049 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,050 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,051 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,052 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,053 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,054 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,055 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,055 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,056 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,056 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,056 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,056 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,056 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,057 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,058 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,061 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,062 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:23:20,067 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 15:23:20,080 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:23:20,091 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:23:20,092 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:23:20,092 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:23:20,092 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:23:20,092 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:23:20,092 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:23:20,092 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:23:20,092 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1Thread1of1ForFork1======== [2021-06-12 15:23:20,100 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 145 places, 150 transitions, 322 flow [2021-06-12 15:23:20,321 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8464 states, 8460 states have (on average 2.8685579196217494) internal successors, (24268), 8463 states have internal predecessors, (24268), 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 15:23:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 8464 states, 8460 states have (on average 2.8685579196217494) internal successors, (24268), 8463 states have internal predecessors, (24268), 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 15:23:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-12 15:23:20,375 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:20,376 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 15:23:20,376 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash -712665903, now seen corresponding path program 1 times [2021-06-12 15:23:20,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:20,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734253988] [2021-06-12 15:23:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:20,567 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 15:23:20,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:20,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734253988] [2021-06-12 15:23:20,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734253988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:20,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:20,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:23:20,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354280586] [2021-06-12 15:23:20,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:23:20,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:20,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:23:20,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:20,602 INFO L87 Difference]: Start difference. First operand has 8464 states, 8460 states have (on average 2.8685579196217494) internal successors, (24268), 8463 states have internal predecessors, (24268), 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 15:23:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:20,727 INFO L93 Difference]: Finished difference Result 11835 states and 32305 transitions. [2021-06-12 15:23:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:23:20,728 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 15:23:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:20,786 INFO L225 Difference]: With dead ends: 11835 [2021-06-12 15:23:20,786 INFO L226 Difference]: Without dead ends: 10548 [2021-06-12 15:23:20,787 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2021-06-12 15:23:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 10224. [2021-06-12 15:23:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10222 states have (on average 2.759929563686167) internal successors, (28212), 10223 states have internal predecessors, (28212), 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 15:23:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 28212 transitions. [2021-06-12 15:23:21,130 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 28212 transitions. Word has length 54 [2021-06-12 15:23:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:21,130 INFO L482 AbstractCegarLoop]: Abstraction has 10224 states and 28212 transitions. [2021-06-12 15:23:21,131 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 15:23:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 28212 transitions. [2021-06-12 15:23:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-06-12 15:23:21,137 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:21,137 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 15:23:21,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 15:23:21,137 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash -89293531, now seen corresponding path program 1 times [2021-06-12 15:23:21,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:21,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064468812] [2021-06-12 15:23:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:21,233 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 15:23:21,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:21,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064468812] [2021-06-12 15:23:21,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064468812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:21,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:21,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:23:21,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921688833] [2021-06-12 15:23:21,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:23:21,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:21,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:23:21,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:23:21,235 INFO L87 Difference]: Start difference. First operand 10224 states and 28212 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 15:23:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:21,381 INFO L93 Difference]: Finished difference Result 15012 states and 41360 transitions. [2021-06-12 15:23:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-12 15:23:21,381 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 15:23:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:21,433 INFO L225 Difference]: With dead ends: 15012 [2021-06-12 15:23:21,433 INFO L226 Difference]: Without dead ends: 15012 [2021-06-12 15:23:21,433 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:23:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15012 states. [2021-06-12 15:23:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15012 to 10980. [2021-06-12 15:23:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10980 states, 10978 states have (on average 2.7589724904354163) internal successors, (30288), 10979 states have internal predecessors, (30288), 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 15:23:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 30288 transitions. [2021-06-12 15:23:21,752 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 30288 transitions. Word has length 63 [2021-06-12 15:23:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:21,752 INFO L482 AbstractCegarLoop]: Abstraction has 10980 states and 30288 transitions. [2021-06-12 15:23:21,752 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 15:23:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 30288 transitions. [2021-06-12 15:23:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-06-12 15:23:21,762 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:21,763 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] [2021-06-12 15:23:21,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 15:23:21,763 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:21,765 INFO L82 PathProgramCache]: Analyzing trace with hash -835995566, now seen corresponding path program 1 times [2021-06-12 15:23:21,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:21,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989749967] [2021-06-12 15:23:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:21,952 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 15:23:21,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:21,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989749967] [2021-06-12 15:23:21,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989749967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:21,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276369816] [2021-06-12 15:23:21,952 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 15:23:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:22,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 15:23:22,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:22,247 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 15:23:22,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276369816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:22,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:22,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-12 15:23:22,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081328697] [2021-06-12 15:23:22,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 15:23:22,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:22,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 15:23:22,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 15:23:22,249 INFO L87 Difference]: Start difference. First operand 10980 states and 30288 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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 15:23:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:22,449 INFO L93 Difference]: Finished difference Result 18555 states and 50921 transitions. [2021-06-12 15:23:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 15:23:22,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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 88 [2021-06-12 15:23:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:22,484 INFO L225 Difference]: With dead ends: 18555 [2021-06-12 15:23:22,484 INFO L226 Difference]: Without dead ends: 18555 [2021-06-12 15:23:22,484 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:23:22,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18555 states. [2021-06-12 15:23:22,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18555 to 14604. [2021-06-12 15:23:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14604 states, 14602 states have (on average 2.753116011505273) internal successors, (40201), 14603 states have internal predecessors, (40201), 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 15:23:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 40201 transitions. [2021-06-12 15:23:22,789 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 40201 transitions. Word has length 88 [2021-06-12 15:23:22,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:22,789 INFO L482 AbstractCegarLoop]: Abstraction has 14604 states and 40201 transitions. [2021-06-12 15:23:22,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 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 15:23:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 40201 transitions. [2021-06-12 15:23:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-06-12 15:23:22,806 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:22,806 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] [2021-06-12 15:23:23,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-12 15:23:23,025 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:23,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1893907773, now seen corresponding path program 1 times [2021-06-12 15:23:23,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:23,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397664767] [2021-06-12 15:23:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-12 15:23:23,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:23,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397664767] [2021-06-12 15:23:23,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397664767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:23,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:23,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:23:23,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893595591] [2021-06-12 15:23:23,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:23:23,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:23,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:23:23,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:23,083 INFO L87 Difference]: Start difference. First operand 14604 states and 40201 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 15:23:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:23,113 INFO L93 Difference]: Finished difference Result 6196 states and 15963 transitions. [2021-06-12 15:23:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:23:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 109 [2021-06-12 15:23:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:23,122 INFO L225 Difference]: With dead ends: 6196 [2021-06-12 15:23:23,122 INFO L226 Difference]: Without dead ends: 6076 [2021-06-12 15:23:23,122 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2021-06-12 15:23:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 5876. [2021-06-12 15:23:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 2.5718420156622406) internal successors, (15107), 5875 states have internal predecessors, (15107), 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 15:23:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 15107 transitions. [2021-06-12 15:23:23,274 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 15107 transitions. Word has length 109 [2021-06-12 15:23:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:23,275 INFO L482 AbstractCegarLoop]: Abstraction has 5876 states and 15107 transitions. [2021-06-12 15:23:23,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 15:23:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 15107 transitions. [2021-06-12 15:23:23,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-06-12 15:23:23,283 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:23,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:23,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 15:23:23,283 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:23,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1832797293, now seen corresponding path program 2 times [2021-06-12 15:23:23,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:23,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989523656] [2021-06-12 15:23:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:23,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:23,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989523656] [2021-06-12 15:23:23,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989523656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:23,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122226072] [2021-06-12 15:23:23,381 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 15:23:23,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:23:23,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:23,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:23:23,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:23,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122226072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:23,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:23,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-12 15:23:23,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069197045] [2021-06-12 15:23:23,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 15:23:23,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:23,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 15:23:23,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-12 15:23:23,696 INFO L87 Difference]: Start difference. First operand 5876 states and 15107 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 15:23:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:23,812 INFO L93 Difference]: Finished difference Result 9595 states and 24725 transitions. [2021-06-12 15:23:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 15:23:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 122 [2021-06-12 15:23:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:23,828 INFO L225 Difference]: With dead ends: 9595 [2021-06-12 15:23:23,828 INFO L226 Difference]: Without dead ends: 9595 [2021-06-12 15:23:23,828 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:23:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2021-06-12 15:23:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 7678. [2021-06-12 15:23:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7676 states have (on average 2.568655549765503) internal successors, (19717), 7677 states have internal predecessors, (19717), 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 15:23:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 19717 transitions. [2021-06-12 15:23:23,959 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 19717 transitions. Word has length 122 [2021-06-12 15:23:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:23,960 INFO L482 AbstractCegarLoop]: Abstraction has 7678 states and 19717 transitions. [2021-06-12 15:23:23,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 9 states have internal predecessors, (169), 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 15:23:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 19717 transitions. [2021-06-12 15:23:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-06-12 15:23:23,969 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:23,969 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] [2021-06-12 15:23:24,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:24,188 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:24,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:24,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1290156653, now seen corresponding path program 1 times [2021-06-12 15:23:24,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:24,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969397659] [2021-06-12 15:23:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:24,303 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 15:23:24,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:24,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969397659] [2021-06-12 15:23:24,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969397659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:24,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274912016] [2021-06-12 15:23:24,304 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 15:23:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:24,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:23:24,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:24,562 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 15:23:24,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274912016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:24,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:24,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-06-12 15:23:24,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844220487] [2021-06-12 15:23:24,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 15:23:24,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 15:23:24,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-12 15:23:24,564 INFO L87 Difference]: Start difference. First operand 7678 states and 19717 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 15:23:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:24,678 INFO L93 Difference]: Finished difference Result 11373 states and 29306 transitions. [2021-06-12 15:23:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 15:23:24,678 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 123 [2021-06-12 15:23:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:24,693 INFO L225 Difference]: With dead ends: 11373 [2021-06-12 15:23:24,694 INFO L226 Difference]: Without dead ends: 11373 [2021-06-12 15:23:24,694 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:23:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2021-06-12 15:23:24,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 8938. [2021-06-12 15:23:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 8936 states have (on average 2.5924350940017904) internal successors, (23166), 8937 states have internal predecessors, (23166), 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 15:23:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 23166 transitions. [2021-06-12 15:23:24,827 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 23166 transitions. Word has length 123 [2021-06-12 15:23:24,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:24,828 INFO L482 AbstractCegarLoop]: Abstraction has 8938 states and 23166 transitions. [2021-06-12 15:23:24,828 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 15:23:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 23166 transitions. [2021-06-12 15:23:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-06-12 15:23:24,840 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:24,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:25,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:25,057 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:25,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1495248532, now seen corresponding path program 3 times [2021-06-12 15:23:25,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:25,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680057028] [2021-06-12 15:23:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:25,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:25,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680057028] [2021-06-12 15:23:25,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680057028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:25,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623052991] [2021-06-12 15:23:25,136 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 15:23:25,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:23:25,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:25,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:23:25,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:25,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623052991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:25,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:25,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-12 15:23:25,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122912957] [2021-06-12 15:23:25,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:23:25,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:25,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:23:25,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:23:25,493 INFO L87 Difference]: Start difference. First operand 8938 states and 23166 transitions. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 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 15:23:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:25,660 INFO L93 Difference]: Finished difference Result 13937 states and 35971 transitions. [2021-06-12 15:23:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 15:23:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 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 156 [2021-06-12 15:23:25,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:25,678 INFO L225 Difference]: With dead ends: 13937 [2021-06-12 15:23:25,678 INFO L226 Difference]: Without dead ends: 13937 [2021-06-12 15:23:25,678 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2021-06-12 15:23:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13937 states. [2021-06-12 15:23:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13937 to 10740. [2021-06-12 15:23:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10740 states, 10738 states have (on average 2.5867014341590613) internal successors, (27776), 10739 states have internal predecessors, (27776), 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 15:23:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10740 states to 10740 states and 27776 transitions. [2021-06-12 15:23:25,835 INFO L78 Accepts]: Start accepts. Automaton has 10740 states and 27776 transitions. Word has length 156 [2021-06-12 15:23:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:25,835 INFO L482 AbstractCegarLoop]: Abstraction has 10740 states and 27776 transitions. [2021-06-12 15:23:25,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 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 15:23:25,835 INFO L276 IsEmpty]: Start isEmpty. Operand 10740 states and 27776 transitions. [2021-06-12 15:23:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-06-12 15:23:25,848 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:25,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:26,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:26,069 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:26,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1195624180, now seen corresponding path program 2 times [2021-06-12 15:23:26,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:26,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586670203] [2021-06-12 15:23:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:26,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:26,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586670203] [2021-06-12 15:23:26,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586670203] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:26,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705170815] [2021-06-12 15:23:26,148 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 15:23:26,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:23:26,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:26,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:23:26,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:26,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705170815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:26,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:26,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-12 15:23:26,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711893057] [2021-06-12 15:23:26,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:23:26,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:26,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:23:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:23:26,504 INFO L87 Difference]: Start difference. First operand 10740 states and 27776 transitions. Second operand has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 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 15:23:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:26,657 INFO L93 Difference]: Finished difference Result 15875 states and 41000 transitions. [2021-06-12 15:23:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:23:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 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 157 [2021-06-12 15:23:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:26,678 INFO L225 Difference]: With dead ends: 15875 [2021-06-12 15:23:26,678 INFO L226 Difference]: Without dead ends: 15875 [2021-06-12 15:23:26,678 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 71.3ms TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:23:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15875 states. [2021-06-12 15:23:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15875 to 12000. [2021-06-12 15:23:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12000 states, 11998 states have (on average 2.60251708618103) internal successors, (31225), 11999 states have internal predecessors, (31225), 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 15:23:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12000 states to 12000 states and 31225 transitions. [2021-06-12 15:23:26,891 INFO L78 Accepts]: Start accepts. Automaton has 12000 states and 31225 transitions. Word has length 157 [2021-06-12 15:23:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:26,891 INFO L482 AbstractCegarLoop]: Abstraction has 12000 states and 31225 transitions. [2021-06-12 15:23:26,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 20.1) internal successors, (201), 10 states have internal predecessors, (201), 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 15:23:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 12000 states and 31225 transitions. [2021-06-12 15:23:26,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-06-12 15:23:26,908 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:26,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:27,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:27,113 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:27,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:27,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1830396245, now seen corresponding path program 4 times [2021-06-12 15:23:27,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:27,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242372692] [2021-06-12 15:23:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:27,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:27,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242372692] [2021-06-12 15:23:27,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242372692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:27,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279527138] [2021-06-12 15:23:27,221 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 15:23:27,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:23:27,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:27,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:23:27,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:27,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279527138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:27,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:27,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:23:27,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018121291] [2021-06-12 15:23:27,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:23:27,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:27,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:23:27,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:23:27,586 INFO L87 Difference]: Start difference. First operand 12000 states and 31225 transitions. Second operand has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 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 15:23:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:27,762 INFO L93 Difference]: Finished difference Result 17199 states and 44580 transitions. [2021-06-12 15:23:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:23:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 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 190 [2021-06-12 15:23:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:27,785 INFO L225 Difference]: With dead ends: 17199 [2021-06-12 15:23:27,785 INFO L226 Difference]: Without dead ends: 17199 [2021-06-12 15:23:27,786 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=176, Invalid=330, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:23:27,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2021-06-12 15:23:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 13802. [2021-06-12 15:23:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 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 15:23:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-06-12 15:23:28,035 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 190 [2021-06-12 15:23:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:28,036 INFO L482 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-06-12 15:23:28,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 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 15:23:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-06-12 15:23:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-06-12 15:23:28,054 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:28,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:28,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:28,271 INFO L430 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:28,271 INFO L82 PathProgramCache]: Analyzing trace with hash -111979729, now seen corresponding path program 3 times [2021-06-12 15:23:28,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:28,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671647095] [2021-06-12 15:23:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-12 15:23:28,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:28,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671647095] [2021-06-12 15:23:28,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671647095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:28,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539092672] [2021-06-12 15:23:28,363 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 15:23:28,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:23:28,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:28,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:23:28,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:28,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539092672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:28,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:28,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-06-12 15:23:28,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198289687] [2021-06-12 15:23:28,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:23:28,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:28,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:23:28,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:23:28,778 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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 15:23:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:28,921 INFO L93 Difference]: Finished difference Result 17787 states and 46053 transitions. [2021-06-12 15:23:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:23:28,922 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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 191 [2021-06-12 15:23:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:28,943 INFO L225 Difference]: With dead ends: 17787 [2021-06-12 15:23:28,943 INFO L226 Difference]: Without dead ends: 17787 [2021-06-12 15:23:28,944 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:23:28,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2021-06-12 15:23:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 13802. [2021-06-12 15:23:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 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 15:23:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-06-12 15:23:29,178 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 191 [2021-06-12 15:23:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:29,178 INFO L482 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-06-12 15:23:29,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 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 15:23:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-06-12 15:23:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-06-12 15:23:29,194 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:29,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:29,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-12 15:23:29,413 INFO L430 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:29,413 INFO L82 PathProgramCache]: Analyzing trace with hash -567160853, now seen corresponding path program 4 times [2021-06-12 15:23:29,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:29,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448288159] [2021-06-12 15:23:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:29,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:29,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448288159] [2021-06-12 15:23:29,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448288159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:29,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567316252] [2021-06-12 15:23:29,497 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 15:23:29,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:23:29,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:29,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:23:29,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 133 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:29,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567316252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:29,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:29,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-12 15:23:29,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854039115] [2021-06-12 15:23:29,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:23:29,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:29,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:23:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:23:29,908 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 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 15:23:30,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:30,093 INFO L93 Difference]: Finished difference Result 19137 states and 49609 transitions. [2021-06-12 15:23:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:23:30,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 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 191 [2021-06-12 15:23:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:30,114 INFO L225 Difference]: With dead ends: 19137 [2021-06-12 15:23:30,114 INFO L226 Difference]: Without dead ends: 19137 [2021-06-12 15:23:30,114 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:23:30,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2021-06-12 15:23:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 13802. [2021-06-12 15:23:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13802 states, 13800 states have (on average 2.5967391304347824) internal successors, (35835), 13801 states have internal predecessors, (35835), 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 15:23:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13802 states to 13802 states and 35835 transitions. [2021-06-12 15:23:30,308 INFO L78 Accepts]: Start accepts. Automaton has 13802 states and 35835 transitions. Word has length 191 [2021-06-12 15:23:30,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:30,308 INFO L482 AbstractCegarLoop]: Abstraction has 13802 states and 35835 transitions. [2021-06-12 15:23:30,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 19.583333333333332) internal successors, (235), 12 states have internal predecessors, (235), 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 15:23:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13802 states and 35835 transitions. [2021-06-12 15:23:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-06-12 15:23:30,323 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:30,323 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, 2, 2, 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 15:23:30,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-12 15:23:30,547 INFO L430 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:30,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:30,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1336481917, now seen corresponding path program 1 times [2021-06-12 15:23:30,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:30,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694808341] [2021-06-12 15:23:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 148 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-12 15:23:30,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:30,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694808341] [2021-06-12 15:23:30,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694808341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:30,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775639156] [2021-06-12 15:23:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 15:23:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:30,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:23:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 124 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-06-12 15:23:31,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775639156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:31,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:31,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-06-12 15:23:31,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668460406] [2021-06-12 15:23:31,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:23:31,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:23:31,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:23:31,013 INFO L87 Difference]: Start difference. First operand 13802 states and 35835 transitions. Second operand has 11 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 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 15:23:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:31,188 INFO L93 Difference]: Finished difference Result 24997 states and 64918 transitions. [2021-06-12 15:23:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 15:23:31,188 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 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 220 [2021-06-12 15:23:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:31,218 INFO L225 Difference]: With dead ends: 24997 [2021-06-12 15:23:31,218 INFO L226 Difference]: Without dead ends: 24997 [2021-06-12 15:23:31,219 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:23:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24997 states. [2021-06-12 15:23:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24997 to 14962. [2021-06-12 15:23:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14962 states, 14960 states have (on average 2.606216577540107) internal successors, (38989), 14961 states have internal predecessors, (38989), 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 15:23:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14962 states to 14962 states and 38989 transitions. [2021-06-12 15:23:31,510 INFO L78 Accepts]: Start accepts. Automaton has 14962 states and 38989 transitions. Word has length 220 [2021-06-12 15:23:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:31,511 INFO L482 AbstractCegarLoop]: Abstraction has 14962 states and 38989 transitions. [2021-06-12 15:23:31,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 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 15:23:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 14962 states and 38989 transitions. [2021-06-12 15:23:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-06-12 15:23:31,528 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:31,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:31,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:31,729 INFO L430 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1317035050, now seen corresponding path program 5 times [2021-06-12 15:23:31,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:31,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228235188] [2021-06-12 15:23:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:31,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:31,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228235188] [2021-06-12 15:23:31,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228235188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:31,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387095136] [2021-06-12 15:23:31,836 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 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 15:23:31,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-12 15:23:31,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:31,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:23:31,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:32,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387095136] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:32,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:32,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:23:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180319321] [2021-06-12 15:23:32,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:23:32,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:23:32,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:23:32,278 INFO L87 Difference]: Start difference. First operand 14962 states and 38989 transitions. Second operand has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 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 15:23:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:32,479 INFO L93 Difference]: Finished difference Result 20871 states and 54084 transitions. [2021-06-12 15:23:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-12 15:23:32,480 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 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 224 [2021-06-12 15:23:32,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:32,501 INFO L225 Difference]: With dead ends: 20871 [2021-06-12 15:23:32,502 INFO L226 Difference]: Without dead ends: 20871 [2021-06-12 15:23:32,502 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=241, Invalid=461, Unknown=0, NotChecked=0, Total=702 [2021-06-12 15:23:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20871 states. [2021-06-12 15:23:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20871 to 16764. [2021-06-12 15:23:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16762 states have (on average 2.6010619257845127) internal successors, (43599), 16763 states have internal predecessors, (43599), 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 15:23:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 43599 transitions. [2021-06-12 15:23:32,708 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 43599 transitions. Word has length 224 [2021-06-12 15:23:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:32,708 INFO L482 AbstractCegarLoop]: Abstraction has 16764 states and 43599 transitions. [2021-06-12 15:23:32,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 18.066666666666666) internal successors, (271), 15 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 15:23:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 43599 transitions. [2021-06-12 15:23:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-06-12 15:23:32,725 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:32,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:32,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:32,942 INFO L430 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1621122864, now seen corresponding path program 5 times [2021-06-12 15:23:32,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:32,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337165142] [2021-06-12 15:23:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 253 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-12 15:23:33,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:33,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337165142] [2021-06-12 15:23:33,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337165142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:33,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109647210] [2021-06-12 15:23:33,037 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 15:23:33,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-12 15:23:33,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:33,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:23:33,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:33,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109647210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:33,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:33,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-06-12 15:23:33,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893989210] [2021-06-12 15:23:33,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:23:33,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:33,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:23:33,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:23:33,403 INFO L87 Difference]: Start difference. First operand 16764 states and 43599 transitions. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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 15:23:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:33,597 INFO L93 Difference]: Finished difference Result 23844 states and 61943 transitions. [2021-06-12 15:23:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 15:23:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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 225 [2021-06-12 15:23:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:33,622 INFO L225 Difference]: With dead ends: 23844 [2021-06-12 15:23:33,622 INFO L226 Difference]: Without dead ends: 23844 [2021-06-12 15:23:33,622 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-06-12 15:23:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23844 states. [2021-06-12 15:23:33,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23844 to 18704. [2021-06-12 15:23:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18704 states, 18702 states have (on average 2.6167254839054648) internal successors, (48938), 18703 states have internal predecessors, (48938), 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 15:23:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 48938 transitions. [2021-06-12 15:23:33,901 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 48938 transitions. Word has length 225 [2021-06-12 15:23:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:33,901 INFO L482 AbstractCegarLoop]: Abstraction has 18704 states and 48938 transitions. [2021-06-12 15:23:33,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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 15:23:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 48938 transitions. [2021-06-12 15:23:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-06-12 15:23:33,919 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:33,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:34,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-12 15:23:34,120 INFO L430 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash 414347854, now seen corresponding path program 6 times [2021-06-12 15:23:34,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:34,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678047898] [2021-06-12 15:23:34,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:34,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:34,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678047898] [2021-06-12 15:23:34,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678047898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:34,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707553095] [2021-06-12 15:23:34,200 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 15:23:34,404 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-12 15:23:34,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:34,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:23:34,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 230 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:34,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707553095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:34,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:34,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-12 15:23:34,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081616348] [2021-06-12 15:23:34,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:23:34,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:34,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:23:34,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:23:34,646 INFO L87 Difference]: Start difference. First operand 18704 states and 48938 transitions. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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 15:23:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:34,861 INFO L93 Difference]: Finished difference Result 30389 states and 79003 transitions. [2021-06-12 15:23:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 15:23:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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 225 [2021-06-12 15:23:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:34,894 INFO L225 Difference]: With dead ends: 30389 [2021-06-12 15:23:34,894 INFO L226 Difference]: Without dead ends: 30389 [2021-06-12 15:23:34,895 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2021-06-12 15:23:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30389 states. [2021-06-12 15:23:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30389 to 19964. [2021-06-12 15:23:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 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 15:23:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-06-12 15:23:35,181 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 225 [2021-06-12 15:23:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:35,181 INFO L482 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-06-12 15:23:35,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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 15:23:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-06-12 15:23:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-06-12 15:23:35,199 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:35,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:35,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-12 15:23:35,400 INFO L430 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash -40833270, now seen corresponding path program 7 times [2021-06-12 15:23:35,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:35,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669302625] [2021-06-12 15:23:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 250 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:35,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:35,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669302625] [2021-06-12 15:23:35,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669302625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:35,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319887010] [2021-06-12 15:23:35,489 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 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 15:23:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:35,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:23:35,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 250 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:35,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319887010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:35,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:35,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-12 15:23:35,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205514591] [2021-06-12 15:23:35,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:23:35,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:35,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:23:35,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:23:35,824 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 15:23:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:36,130 INFO L93 Difference]: Finished difference Result 29709 states and 77502 transitions. [2021-06-12 15:23:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:23:36,130 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 225 [2021-06-12 15:23:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:36,161 INFO L225 Difference]: With dead ends: 29709 [2021-06-12 15:23:36,161 INFO L226 Difference]: Without dead ends: 29709 [2021-06-12 15:23:36,162 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=206, Invalid=550, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:23:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29709 states. [2021-06-12 15:23:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29709 to 19964. [2021-06-12 15:23:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 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 15:23:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-06-12 15:23:36,493 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 225 [2021-06-12 15:23:36,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:36,494 INFO L482 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-06-12 15:23:36,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 19.214285714285715) internal successors, (269), 14 states have internal predecessors, (269), 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 15:23:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-06-12 15:23:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-06-12 15:23:36,514 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:36,514 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, 2, 2, 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 15:23:36,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-12 15:23:36,715 INFO L430 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash -288124132, now seen corresponding path program 2 times [2021-06-12 15:23:36,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:36,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161776569] [2021-06-12 15:23:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 265 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-06-12 15:23:36,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:36,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161776569] [2021-06-12 15:23:36,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161776569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:36,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497754780] [2021-06-12 15:23:36,833 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 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 15:23:36,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:23:36,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:36,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:23:36,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 241 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-06-12 15:23:37,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497754780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:37,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:37,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-06-12 15:23:37,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203721301] [2021-06-12 15:23:37,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:23:37,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:37,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:23:37,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:23:37,251 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 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 15:23:37,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:37,507 INFO L93 Difference]: Finished difference Result 33419 states and 87480 transitions. [2021-06-12 15:23:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:23:37,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 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 254 [2021-06-12 15:23:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:37,550 INFO L225 Difference]: With dead ends: 33419 [2021-06-12 15:23:37,550 INFO L226 Difference]: Without dead ends: 33419 [2021-06-12 15:23:37,550 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:23:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33419 states. [2021-06-12 15:23:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33419 to 19964. [2021-06-12 15:23:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19964 states, 19962 states have (on average 2.624336238853822) internal successors, (52387), 19963 states have internal predecessors, (52387), 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 15:23:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19964 states to 19964 states and 52387 transitions. [2021-06-12 15:23:37,909 INFO L78 Accepts]: Start accepts. Automaton has 19964 states and 52387 transitions. Word has length 254 [2021-06-12 15:23:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:37,910 INFO L482 AbstractCegarLoop]: Abstraction has 19964 states and 52387 transitions. [2021-06-12 15:23:37,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 20.23076923076923) internal successors, (263), 13 states have internal predecessors, (263), 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 15:23:37,910 INFO L276 IsEmpty]: Start isEmpty. Operand 19964 states and 52387 transitions. [2021-06-12 15:23:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-06-12 15:23:37,929 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:37,929 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, 2, 2, 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 15:23:38,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:38,130 INFO L430 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:38,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1046159806, now seen corresponding path program 3 times [2021-06-12 15:23:38,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:38,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85140513] [2021-06-12 15:23:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 12 proven. 242 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-12 15:23:38,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:38,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85140513] [2021-06-12 15:23:38,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85140513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:38,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004720274] [2021-06-12 15:23:38,221 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 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 15:23:38,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-12 15:23:38,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:38,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-12 15:23:38,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-12 15:23:38,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004720274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:38,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:23:38,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-06-12 15:23:38,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487666372] [2021-06-12 15:23:38,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 15:23:38,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:38,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 15:23:38,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:23:38,611 INFO L87 Difference]: Start difference. First operand 19964 states and 52387 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 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 15:23:38,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:38,774 INFO L93 Difference]: Finished difference Result 26914 states and 70438 transitions. [2021-06-12 15:23:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 15:23:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 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 254 [2021-06-12 15:23:38,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:38,814 INFO L225 Difference]: With dead ends: 26914 [2021-06-12 15:23:38,815 INFO L226 Difference]: Without dead ends: 26914 [2021-06-12 15:23:38,815 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:23:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26914 states. [2021-06-12 15:23:39,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26914 to 20644. [2021-06-12 15:23:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20644 states, 20642 states have (on average 2.627700804185641) internal successors, (54241), 20643 states have internal predecessors, (54241), 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 15:23:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20644 states to 20644 states and 54241 transitions. [2021-06-12 15:23:39,112 INFO L78 Accepts]: Start accepts. Automaton has 20644 states and 54241 transitions. Word has length 254 [2021-06-12 15:23:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:39,112 INFO L482 AbstractCegarLoop]: Abstraction has 20644 states and 54241 transitions. [2021-06-12 15:23:39,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 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 15:23:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 20644 states and 54241 transitions. [2021-06-12 15:23:39,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-06-12 15:23:39,219 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:39,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:39,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-12 15:23:39,420 INFO L430 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:39,420 INFO L82 PathProgramCache]: Analyzing trace with hash -518142441, now seen corresponding path program 6 times [2021-06-12 15:23:39,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:39,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264735135] [2021-06-12 15:23:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:39,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:39,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264735135] [2021-06-12 15:23:39,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264735135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:39,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029705109] [2021-06-12 15:23:39,539 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 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 15:23:39,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-12 15:23:39,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:23:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:40,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029705109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:40,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:40,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:23:40,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184195979] [2021-06-12 15:23:40,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:23:40,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:40,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:23:40,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:23:40,028 INFO L87 Difference]: Start difference. First operand 20644 states and 54241 transitions. Second operand has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 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 15:23:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:40,300 INFO L93 Difference]: Finished difference Result 27943 states and 72966 transitions. [2021-06-12 15:23:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-12 15:23:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 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 258 [2021-06-12 15:23:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:40,332 INFO L225 Difference]: With dead ends: 27943 [2021-06-12 15:23:40,333 INFO L226 Difference]: Without dead ends: 27943 [2021-06-12 15:23:40,333 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 160.4ms TimeCoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2021-06-12 15:23:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27943 states. [2021-06-12 15:23:40,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27943 to 22446. [2021-06-12 15:23:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22446 states, 22444 states have (on average 2.62212618071645) internal successors, (58851), 22445 states have internal predecessors, (58851), 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 15:23:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22446 states to 22446 states and 58851 transitions. [2021-06-12 15:23:40,631 INFO L78 Accepts]: Start accepts. Automaton has 22446 states and 58851 transitions. Word has length 258 [2021-06-12 15:23:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:40,632 INFO L482 AbstractCegarLoop]: Abstraction has 22446 states and 58851 transitions. [2021-06-12 15:23:40,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 17.941176470588236) internal successors, (305), 17 states have internal predecessors, (305), 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 15:23:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 22446 states and 58851 transitions. [2021-06-12 15:23:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-06-12 15:23:40,652 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:40,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:40,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:40,853 INFO L430 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:40,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:40,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1149446897, now seen corresponding path program 8 times [2021-06-12 15:23:40,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:40,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752335794] [2021-06-12 15:23:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 404 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-12 15:23:40,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:40,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752335794] [2021-06-12 15:23:40,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752335794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:40,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323116863] [2021-06-12 15:23:40,981 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 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 15:23:41,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:23:41,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:41,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:23:41,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:41,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323116863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:41,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:41,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-06-12 15:23:41,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557945149] [2021-06-12 15:23:41,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:23:41,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:41,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:23:41,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:23:41,365 INFO L87 Difference]: Start difference. First operand 22446 states and 58851 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 15:23:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:41,583 INFO L93 Difference]: Finished difference Result 29176 states and 76036 transitions. [2021-06-12 15:23:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 15:23:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 259 [2021-06-12 15:23:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:41,619 INFO L225 Difference]: With dead ends: 29176 [2021-06-12 15:23:41,620 INFO L226 Difference]: Without dead ends: 29176 [2021-06-12 15:23:41,620 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=194, Invalid=456, Unknown=0, NotChecked=0, Total=650 [2021-06-12 15:23:41,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29176 states. [2021-06-12 15:23:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29176 to 23126. [2021-06-12 15:23:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23126 states, 23124 states have (on average 2.626751427088739) internal successors, (60741), 23125 states have internal predecessors, (60741), 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 15:23:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23126 states to 23126 states and 60741 transitions. [2021-06-12 15:23:41,931 INFO L78 Accepts]: Start accepts. Automaton has 23126 states and 60741 transitions. Word has length 259 [2021-06-12 15:23:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:41,931 INFO L482 AbstractCegarLoop]: Abstraction has 23126 states and 60741 transitions. [2021-06-12 15:23:41,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 15:23:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 23126 states and 60741 transitions. [2021-06-12 15:23:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-06-12 15:23:41,954 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:41,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:42,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:42,155 INFO L430 AbstractCegarLoop]: === Iteration 21 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1682508145, now seen corresponding path program 9 times [2021-06-12 15:23:42,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:42,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077834416] [2021-06-12 15:23:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:42,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:42,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077834416] [2021-06-12 15:23:42,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077834416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:42,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782610207] [2021-06-12 15:23:42,257 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 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 15:23:42,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-12 15:23:42,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:42,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:23:42,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:42,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782610207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:42,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:42,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-12 15:23:42,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895052284] [2021-06-12 15:23:42,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:23:42,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:23:42,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:23:42,861 INFO L87 Difference]: Start difference. First operand 23126 states and 60741 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 15:23:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:43,118 INFO L93 Difference]: Finished difference Result 34101 states and 89002 transitions. [2021-06-12 15:23:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-12 15:23:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 259 [2021-06-12 15:23:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:43,155 INFO L225 Difference]: With dead ends: 34101 [2021-06-12 15:23:43,156 INFO L226 Difference]: Without dead ends: 34101 [2021-06-12 15:23:43,156 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-06-12 15:23:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34101 states. [2021-06-12 15:23:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34101 to 25066. [2021-06-12 15:23:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25066 states, 25064 states have (on average 2.6364506862432173) internal successors, (66080), 25065 states have internal predecessors, (66080), 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 15:23:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25066 states to 25066 states and 66080 transitions. [2021-06-12 15:23:43,524 INFO L78 Accepts]: Start accepts. Automaton has 25066 states and 66080 transitions. Word has length 259 [2021-06-12 15:23:43,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:43,524 INFO L482 AbstractCegarLoop]: Abstraction has 25066 states and 66080 transitions. [2021-06-12 15:23:43,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 15:23:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 25066 states and 66080 transitions. [2021-06-12 15:23:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-06-12 15:23:43,549 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:43,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:43,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-12 15:23:43,761 INFO L430 AbstractCegarLoop]: === Iteration 22 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:43,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:43,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1405684141, now seen corresponding path program 10 times [2021-06-12 15:23:43,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:43,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989721079] [2021-06-12 15:23:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:43,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:43,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989721079] [2021-06-12 15:23:43,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989721079] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:43,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045924147] [2021-06-12 15:23:43,855 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 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 15:23:44,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:23:44,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:23:44,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 15 proven. 381 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:44,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045924147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:44,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:44,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-12 15:23:44,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529213693] [2021-06-12 15:23:44,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:23:44,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:44,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:23:44,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:23:44,362 INFO L87 Difference]: Start difference. First operand 25066 states and 66080 transitions. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 15:23:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:44,638 INFO L93 Difference]: Finished difference Result 34341 states and 90071 transitions. [2021-06-12 15:23:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-12 15:23:44,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 259 [2021-06-12 15:23:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:44,677 INFO L225 Difference]: With dead ends: 34341 [2021-06-12 15:23:44,677 INFO L226 Difference]: Without dead ends: 34341 [2021-06-12 15:23:44,678 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2021-06-12 15:23:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34341 states. [2021-06-12 15:23:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34341 to 26326. [2021-06-12 15:23:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26326 states, 26324 states have (on average 2.641277921288558) internal successors, (69529), 26325 states have internal predecessors, (69529), 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 15:23:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26326 states to 26326 states and 69529 transitions. [2021-06-12 15:23:45,071 INFO L78 Accepts]: Start accepts. Automaton has 26326 states and 69529 transitions. Word has length 259 [2021-06-12 15:23:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:45,072 INFO L482 AbstractCegarLoop]: Abstraction has 26326 states and 69529 transitions. [2021-06-12 15:23:45,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 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 15:23:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 26326 states and 69529 transitions. [2021-06-12 15:23:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-06-12 15:23:45,102 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:45,103 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, 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 15:23:45,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:45,303 INFO L430 AbstractCegarLoop]: === Iteration 23 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:45,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:45,303 INFO L82 PathProgramCache]: Analyzing trace with hash -498296266, now seen corresponding path program 4 times [2021-06-12 15:23:45,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:45,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179396004] [2021-06-12 15:23:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 219 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-06-12 15:23:45,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:45,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179396004] [2021-06-12 15:23:45,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179396004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:45,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619802842] [2021-06-12 15:23:45,389 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 15:23:45,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:23:45,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:45,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:23:45,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 51 proven. 219 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-06-12 15:23:46,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619802842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:46,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:46,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:23:46,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163709616] [2021-06-12 15:23:46,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:23:46,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:46,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:23:46,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:23:46,007 INFO L87 Difference]: Start difference. First operand 26326 states and 69529 transitions. Second operand has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 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 15:23:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:46,251 INFO L93 Difference]: Finished difference Result 41691 states and 109020 transitions. [2021-06-12 15:23:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:23:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 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 283 [2021-06-12 15:23:46,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:46,299 INFO L225 Difference]: With dead ends: 41691 [2021-06-12 15:23:46,299 INFO L226 Difference]: Without dead ends: 41691 [2021-06-12 15:23:46,299 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:23:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41691 states. [2021-06-12 15:23:46,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41691 to 29426. [2021-06-12 15:23:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29426 states, 29424 states have (on average 2.6516449157150626) internal successors, (78022), 29425 states have internal predecessors, (78022), 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 15:23:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29426 states to 29426 states and 78022 transitions. [2021-06-12 15:23:46,760 INFO L78 Accepts]: Start accepts. Automaton has 29426 states and 78022 transitions. Word has length 283 [2021-06-12 15:23:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:46,760 INFO L482 AbstractCegarLoop]: Abstraction has 29426 states and 78022 transitions. [2021-06-12 15:23:46,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 20.615384615384617) internal successors, (268), 13 states have internal predecessors, (268), 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 15:23:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 29426 states and 78022 transitions. [2021-06-12 15:23:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-06-12 15:23:46,792 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:46,792 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, 2, 2, 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 15:23:46,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-12 15:23:46,992 INFO L430 AbstractCegarLoop]: === Iteration 24 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1969215169, now seen corresponding path program 5 times [2021-06-12 15:23:46,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:46,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044823921] [2021-06-12 15:23:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 396 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:23:47,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:47,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044823921] [2021-06-12 15:23:47,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044823921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:47,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756522198] [2021-06-12 15:23:47,138 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 15:23:47,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-12 15:23:47,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:47,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:23:47,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 15 proven. 372 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:23:47,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756522198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:47,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:47,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-06-12 15:23:47,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091702087] [2021-06-12 15:23:47,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:23:47,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:47,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:23:47,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:23:47,620 INFO L87 Difference]: Start difference. First operand 29426 states and 78022 transitions. Second operand has 13 states, 13 states have (on average 21.23076923076923) internal successors, (276), 13 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 15:23:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:47,862 INFO L93 Difference]: Finished difference Result 39436 states and 103060 transitions. [2021-06-12 15:23:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:23:47,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.23076923076923) internal successors, (276), 13 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 288 [2021-06-12 15:23:47,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:47,907 INFO L225 Difference]: With dead ends: 39436 [2021-06-12 15:23:47,908 INFO L226 Difference]: Without dead ends: 39436 [2021-06-12 15:23:47,908 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:23:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39436 states. [2021-06-12 15:23:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39436 to 27486. [2021-06-12 15:23:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27486 states, 27484 states have (on average 2.6445568330665115) internal successors, (72683), 27485 states have internal predecessors, (72683), 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 15:23:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27486 states to 27486 states and 72683 transitions. [2021-06-12 15:23:48,321 INFO L78 Accepts]: Start accepts. Automaton has 27486 states and 72683 transitions. Word has length 288 [2021-06-12 15:23:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:48,321 INFO L482 AbstractCegarLoop]: Abstraction has 27486 states and 72683 transitions. [2021-06-12 15:23:48,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 21.23076923076923) internal successors, (276), 13 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 15:23:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 27486 states and 72683 transitions. [2021-06-12 15:23:48,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-06-12 15:23:48,354 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:48,355 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, 2, 2, 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 15:23:48,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-06-12 15:23:48,571 INFO L430 AbstractCegarLoop]: === Iteration 25 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:48,572 INFO L82 PathProgramCache]: Analyzing trace with hash 31545707, now seen corresponding path program 6 times [2021-06-12 15:23:48,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:48,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865540083] [2021-06-12 15:23:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 54 proven. 388 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:23:48,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:48,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865540083] [2021-06-12 15:23:48,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865540083] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:48,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516211174] [2021-06-12 15:23:48,686 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 15:23:49,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-12 15:23:49,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:49,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-12 15:23:49,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 250 proven. 59 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-06-12 15:23:49,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516211174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:49,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:49,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-06-12 15:23:49,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951450650] [2021-06-12 15:23:49,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-12 15:23:49,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-12 15:23:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-06-12 15:23:49,418 INFO L87 Difference]: Start difference. First operand 27486 states and 72683 transitions. Second operand has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 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 15:23:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:50,074 INFO L93 Difference]: Finished difference Result 56766 states and 149064 transitions. [2021-06-12 15:23:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 15:23:50,074 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 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 288 [2021-06-12 15:23:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:50,144 INFO L225 Difference]: With dead ends: 56766 [2021-06-12 15:23:50,145 INFO L226 Difference]: Without dead ends: 56766 [2021-06-12 15:23:50,145 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 472.9ms TimeCoverageRelationStatistics Valid=623, Invalid=2029, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 15:23:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56766 states. [2021-06-12 15:23:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56766 to 30626. [2021-06-12 15:23:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30626 states, 30624 states have (on average 2.658894984326019) internal successors, (81426), 30625 states have internal predecessors, (81426), 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 15:23:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30626 states to 30626 states and 81426 transitions. [2021-06-12 15:23:50,698 INFO L78 Accepts]: Start accepts. Automaton has 30626 states and 81426 transitions. Word has length 288 [2021-06-12 15:23:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:50,698 INFO L482 AbstractCegarLoop]: Abstraction has 30626 states and 81426 transitions. [2021-06-12 15:23:50,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 21.136363636363637) internal successors, (465), 22 states have internal predecessors, (465), 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 15:23:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30626 states and 81426 transitions. [2021-06-12 15:23:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-06-12 15:23:50,730 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:50,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:50,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:50,936 INFO L430 AbstractCegarLoop]: === Iteration 26 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:50,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1883498472, now seen corresponding path program 7 times [2021-06-12 15:23:50,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:50,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241526338] [2021-06-12 15:23:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:51,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:51,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241526338] [2021-06-12 15:23:51,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241526338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:51,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096521162] [2021-06-12 15:23:51,071 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 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 15:23:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:23:51,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 819 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:51,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096521162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:51,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:51,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-06-12 15:23:51,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079570095] [2021-06-12 15:23:51,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-12 15:23:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-12 15:23:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-06-12 15:23:51,502 INFO L87 Difference]: Start difference. First operand 30626 states and 81426 transitions. Second operand has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 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 15:23:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:51,831 INFO L93 Difference]: Finished difference Result 39095 states and 103168 transitions. [2021-06-12 15:23:51,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:23:51,831 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 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 292 [2021-06-12 15:23:51,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:51,877 INFO L225 Difference]: With dead ends: 39095 [2021-06-12 15:23:51,877 INFO L226 Difference]: Without dead ends: 39095 [2021-06-12 15:23:51,878 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 195.8ms TimeCoverageRelationStatistics Valid=401, Invalid=789, Unknown=0, NotChecked=0, Total=1190 [2021-06-12 15:23:51,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39095 states. [2021-06-12 15:23:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39095 to 33108. [2021-06-12 15:23:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33106 states have (on average 2.6558931915664834) internal successors, (87926), 33107 states have internal predecessors, (87926), 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 15:23:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 87926 transitions. [2021-06-12 15:23:52,560 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 87926 transitions. Word has length 292 [2021-06-12 15:23:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:52,561 INFO L482 AbstractCegarLoop]: Abstraction has 33108 states and 87926 transitions. [2021-06-12 15:23:52,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 17.842105263157894) internal successors, (339), 19 states have internal predecessors, (339), 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 15:23:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 87926 transitions. [2021-06-12 15:23:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-06-12 15:23:52,594 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:52,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:52,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-06-12 15:23:52,802 INFO L430 AbstractCegarLoop]: === Iteration 27 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:52,803 INFO L82 PathProgramCache]: Analyzing trace with hash 425444978, now seen corresponding path program 11 times [2021-06-12 15:23:52,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:52,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959448851] [2021-06-12 15:23:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 589 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-12 15:23:52,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:52,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959448851] [2021-06-12 15:23:52,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959448851] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:52,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727582247] [2021-06-12 15:23:52,937 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 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 15:23:53,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-12 15:23:53,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:53,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:23:53,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:53,367 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:53,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727582247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:53,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:53,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-06-12 15:23:53,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355309424] [2021-06-12 15:23:53,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:23:53,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:23:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:23:53,368 INFO L87 Difference]: Start difference. First operand 33108 states and 87926 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 15:23:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:53,667 INFO L93 Difference]: Finished difference Result 41038 states and 107978 transitions. [2021-06-12 15:23:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:23:53,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 293 [2021-06-12 15:23:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:53,716 INFO L225 Difference]: With dead ends: 41038 [2021-06-12 15:23:53,716 INFO L226 Difference]: Without dead ends: 41038 [2021-06-12 15:23:53,717 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 154.7ms TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-06-12 15:23:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41038 states. [2021-06-12 15:23:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41038 to 33108. [2021-06-12 15:23:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33108 states, 33106 states have (on average 2.6558931915664834) internal successors, (87926), 33107 states have internal predecessors, (87926), 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 15:23:54,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33108 states to 33108 states and 87926 transitions. [2021-06-12 15:23:54,393 INFO L78 Accepts]: Start accepts. Automaton has 33108 states and 87926 transitions. Word has length 293 [2021-06-12 15:23:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:54,394 INFO L482 AbstractCegarLoop]: Abstraction has 33108 states and 87926 transitions. [2021-06-12 15:23:54,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 15:23:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 33108 states and 87926 transitions. [2021-06-12 15:23:54,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-06-12 15:23:54,427 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:54,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:54,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:23:54,628 INFO L430 AbstractCegarLoop]: === Iteration 28 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:54,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1034103440, now seen corresponding path program 12 times [2021-06-12 15:23:54,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:54,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105754394] [2021-06-12 15:23:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:54,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:54,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105754394] [2021-06-12 15:23:54,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105754394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:54,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143488783] [2021-06-12 15:23:54,892 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 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 15:23:55,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-12 15:23:55,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:23:55,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:23:55,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:55,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143488783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:55,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:55,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-12 15:23:55,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923795747] [2021-06-12 15:23:55,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:23:55,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:55,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:23:55,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:23:55,429 INFO L87 Difference]: Start difference. First operand 33108 states and 87926 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 15:23:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:55,765 INFO L93 Difference]: Finished difference Result 46473 states and 122134 transitions. [2021-06-12 15:23:55,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:23:55,765 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 293 [2021-06-12 15:23:55,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:55,817 INFO L225 Difference]: With dead ends: 46473 [2021-06-12 15:23:55,818 INFO L226 Difference]: Without dead ends: 46473 [2021-06-12 15:23:55,818 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 194.2ms TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2021-06-12 15:23:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46473 states. [2021-06-12 15:23:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46473 to 34368. [2021-06-12 15:23:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 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 15:23:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-06-12 15:23:56,544 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 293 [2021-06-12 15:23:56,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:56,544 INFO L482 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-06-12 15:23:56,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 15:23:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-06-12 15:23:56,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-06-12 15:23:56,577 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:56,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:56,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-06-12 15:23:56,778 INFO L430 AbstractCegarLoop]: === Iteration 29 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1797851602, now seen corresponding path program 13 times [2021-06-12 15:23:56,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:56,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488221857] [2021-06-12 15:23:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:56,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:56,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488221857] [2021-06-12 15:23:56,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488221857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:56,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321928247] [2021-06-12 15:23:56,884 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 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 15:23:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:56,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:23:57,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 18 proven. 566 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:23:57,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321928247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:57,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:57,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2021-06-12 15:23:57,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725735572] [2021-06-12 15:23:57,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 15:23:57,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:57,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 15:23:57,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:23:57,291 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 15:23:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:57,651 INFO L93 Difference]: Finished difference Result 46513 states and 122653 transitions. [2021-06-12 15:23:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-12 15:23:57,651 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 293 [2021-06-12 15:23:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:57,700 INFO L225 Difference]: With dead ends: 46513 [2021-06-12 15:23:57,701 INFO L226 Difference]: Without dead ends: 46513 [2021-06-12 15:23:57,701 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 195.4ms TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2021-06-12 15:23:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46513 states. [2021-06-12 15:23:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46513 to 36308. [2021-06-12 15:23:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 36306 states have (on average 2.6638572136836887) internal successors, (96714), 36307 states have internal predecessors, (96714), 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 15:23:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 96714 transitions. [2021-06-12 15:23:58,253 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 96714 transitions. Word has length 293 [2021-06-12 15:23:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:58,253 INFO L482 AbstractCegarLoop]: Abstraction has 36308 states and 96714 transitions. [2021-06-12 15:23:58,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 19.75) internal successors, (316), 16 states have internal predecessors, (316), 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 15:23:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 96714 transitions. [2021-06-12 15:23:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-06-12 15:23:58,293 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:58,293 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, 2, 2, 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 15:23:58,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-12 15:23:58,495 INFO L430 AbstractCegarLoop]: === Iteration 30 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:58,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1019457856, now seen corresponding path program 7 times [2021-06-12 15:23:58,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:58,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387465092] [2021-06-12 15:23:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:23:58,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:58,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387465092] [2021-06-12 15:23:58,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387465092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:58,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920859599] [2021-06-12 15:23:58,629 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 15:23:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:58,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:23:58,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:23:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 557 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:23:59,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920859599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:23:59,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:23:59,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-06-12 15:23:59,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688882454] [2021-06-12 15:23:59,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:23:59,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:59,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:23:59,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:23:59,208 INFO L87 Difference]: Start difference. First operand 36308 states and 96714 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 15:23:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:59,488 INFO L93 Difference]: Finished difference Result 50953 states and 133764 transitions. [2021-06-12 15:23:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:23:59,489 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 322 [2021-06-12 15:23:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:59,552 INFO L225 Difference]: With dead ends: 50953 [2021-06-12 15:23:59,553 INFO L226 Difference]: Without dead ends: 50953 [2021-06-12 15:23:59,553 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:23:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50953 states. [2021-06-12 15:24:00,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50953 to 34368. [2021-06-12 15:24:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 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 15:24:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-06-12 15:24:00,136 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 322 [2021-06-12 15:24:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:00,136 INFO L482 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-06-12 15:24:00,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 15:24:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-06-12 15:24:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-06-12 15:24:00,320 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:00,321 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, 2, 2, 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 15:24:00,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:00,529 INFO L430 AbstractCegarLoop]: === Iteration 31 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:00,529 INFO L82 PathProgramCache]: Analyzing trace with hash -187317154, now seen corresponding path program 8 times [2021-06-12 15:24:00,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:00,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928165227] [2021-06-12 15:24:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:24:00,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:00,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928165227] [2021-06-12 15:24:00,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928165227] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:00,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744839361] [2021-06-12 15:24:00,642 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 15:24:00,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:00,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:00,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:00,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 557 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:24:01,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744839361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:01,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:01,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-06-12 15:24:01,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923696822] [2021-06-12 15:24:01,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:24:01,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:01,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:24:01,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:24:01,183 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 15:24:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:01,478 INFO L93 Difference]: Finished difference Result 49438 states and 130087 transitions. [2021-06-12 15:24:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:24:01,478 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 322 [2021-06-12 15:24:01,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:01,543 INFO L225 Difference]: With dead ends: 49438 [2021-06-12 15:24:01,543 INFO L226 Difference]: Without dead ends: 49438 [2021-06-12 15:24:01,543 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:24:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49438 states. [2021-06-12 15:24:02,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49438 to 34368. [2021-06-12 15:24:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34368 states, 34366 states have (on average 2.6588779607751847) internal successors, (91375), 34367 states have internal predecessors, (91375), 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 15:24:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34368 states to 34368 states and 91375 transitions. [2021-06-12 15:24:02,142 INFO L78 Accepts]: Start accepts. Automaton has 34368 states and 91375 transitions. Word has length 322 [2021-06-12 15:24:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:02,143 INFO L482 AbstractCegarLoop]: Abstraction has 34368 states and 91375 transitions. [2021-06-12 15:24:02,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 15:24:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 34368 states and 91375 transitions. [2021-06-12 15:24:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-06-12 15:24:02,182 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:02,182 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, 2, 2, 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 15:24:02,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:02,389 INFO L430 AbstractCegarLoop]: === Iteration 32 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:02,389 INFO L82 PathProgramCache]: Analyzing trace with hash -298844420, now seen corresponding path program 9 times [2021-06-12 15:24:02,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:02,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022269404] [2021-06-12 15:24:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 581 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:24:02,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:02,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022269404] [2021-06-12 15:24:02,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022269404] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:02,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276476266] [2021-06-12 15:24:02,524 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 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 15:24:02,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-12 15:24:02,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:02,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:02,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 557 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:24:03,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276476266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:03,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:03,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-06-12 15:24:03,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240038892] [2021-06-12 15:24:03,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:24:03,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:03,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:24:03,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:24:03,336 INFO L87 Difference]: Start difference. First operand 34368 states and 91375 transitions. Second operand has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 15:24:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:03,677 INFO L93 Difference]: Finished difference Result 54048 states and 142592 transitions. [2021-06-12 15:24:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-12 15:24:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 322 [2021-06-12 15:24:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:03,831 INFO L225 Difference]: With dead ends: 54048 [2021-06-12 15:24:03,832 INFO L226 Difference]: Without dead ends: 54048 [2021-06-12 15:24:03,832 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-06-12 15:24:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54048 states. [2021-06-12 15:24:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54048 to 36308. [2021-06-12 15:24:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 36306 states have (on average 2.6638572136836887) internal successors, (96714), 36307 states have internal predecessors, (96714), 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 15:24:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 96714 transitions. [2021-06-12 15:24:04,416 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 96714 transitions. Word has length 322 [2021-06-12 15:24:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:04,416 INFO L482 AbstractCegarLoop]: Abstraction has 36308 states and 96714 transitions. [2021-06-12 15:24:04,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.666666666666668) internal successors, (310), 15 states have internal predecessors, (310), 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 15:24:04,416 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 96714 transitions. [2021-06-12 15:24:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-06-12 15:24:04,452 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:04,452 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, 2, 2, 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 15:24:04,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-06-12 15:24:04,657 INFO L430 AbstractCegarLoop]: === Iteration 33 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:04,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1678975488, now seen corresponding path program 10 times [2021-06-12 15:24:04,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:04,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872384547] [2021-06-12 15:24:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:04,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:04,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872384547] [2021-06-12 15:24:04,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872384547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:04,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416290218] [2021-06-12 15:24:04,880 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 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 15:24:05,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:24:05,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:05,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:05,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416290218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:05,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:05,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:24:05,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571132451] [2021-06-12 15:24:05,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:24:05,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:05,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:24:05,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:24:05,524 INFO L87 Difference]: Start difference. First operand 36308 states and 96714 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 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 15:24:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:05,883 INFO L93 Difference]: Finished difference Result 54193 states and 142578 transitions. [2021-06-12 15:24:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:24:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 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 322 [2021-06-12 15:24:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:05,950 INFO L225 Difference]: With dead ends: 54193 [2021-06-12 15:24:05,950 INFO L226 Difference]: Without dead ends: 54193 [2021-06-12 15:24:05,950 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=213, Invalid=599, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:24:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54193 states. [2021-06-12 15:24:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54193 to 39408. [2021-06-12 15:24:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39408 states, 39406 states have (on average 2.6698218545399177) internal successors, (105207), 39407 states have internal predecessors, (105207), 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 15:24:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39408 states to 39408 states and 105207 transitions. [2021-06-12 15:24:06,636 INFO L78 Accepts]: Start accepts. Automaton has 39408 states and 105207 transitions. Word has length 322 [2021-06-12 15:24:06,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:06,636 INFO L482 AbstractCegarLoop]: Abstraction has 39408 states and 105207 transitions. [2021-06-12 15:24:06,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 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 15:24:06,636 INFO L276 IsEmpty]: Start isEmpty. Operand 39408 states and 105207 transitions. [2021-06-12 15:24:06,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-06-12 15:24:06,675 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:06,675 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, 2, 2, 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 15:24:06,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:06,876 INFO L430 AbstractCegarLoop]: === Iteration 34 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:06,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1567448222, now seen corresponding path program 11 times [2021-06-12 15:24:06,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:06,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494880841] [2021-06-12 15:24:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:06,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:06,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494880841] [2021-06-12 15:24:06,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494880841] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:06,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145722369] [2021-06-12 15:24:06,975 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 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 15:24:07,211 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-06-12 15:24:07,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:07,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:07,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 18 proven. 558 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:07,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145722369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:07,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:07,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 15:24:07,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244440021] [2021-06-12 15:24:07,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 15:24:07,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:07,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 15:24:07,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:24:07,654 INFO L87 Difference]: Start difference. First operand 39408 states and 105207 transitions. Second operand has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 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 15:24:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:07,977 INFO L93 Difference]: Finished difference Result 65138 states and 172813 transitions. [2021-06-12 15:24:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-12 15:24:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 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 322 [2021-06-12 15:24:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:08,061 INFO L225 Difference]: With dead ends: 65138 [2021-06-12 15:24:08,061 INFO L226 Difference]: Without dead ends: 65138 [2021-06-12 15:24:08,061 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2021-06-12 15:24:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65138 states. [2021-06-12 15:24:08,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65138 to 41348. [2021-06-12 15:24:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41348 states, 41346 states have (on average 2.6736806462535676) internal successors, (110546), 41347 states have internal predecessors, (110546), 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 15:24:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41348 states to 41348 states and 110546 transitions. [2021-06-12 15:24:08,951 INFO L78 Accepts]: Start accepts. Automaton has 41348 states and 110546 transitions. Word has length 322 [2021-06-12 15:24:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:08,952 INFO L482 AbstractCegarLoop]: Abstraction has 41348 states and 110546 transitions. [2021-06-12 15:24:08,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 20.733333333333334) internal successors, (311), 15 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 15:24:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 41348 states and 110546 transitions. [2021-06-12 15:24:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-06-12 15:24:08,995 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:08,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:09,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-06-12 15:24:09,196 INFO L430 AbstractCegarLoop]: === Iteration 35 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:09,197 INFO L82 PathProgramCache]: Analyzing trace with hash -350311975, now seen corresponding path program 8 times [2021-06-12 15:24:09,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:09,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857115455] [2021-06-12 15:24:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:09,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:09,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857115455] [2021-06-12 15:24:09,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857115455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:09,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95620423] [2021-06-12 15:24:09,370 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 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 15:24:09,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:09,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:09,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:09,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:09,736 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:09,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95620423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:09,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:09,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-06-12 15:24:09,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720562143] [2021-06-12 15:24:09,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-12 15:24:09,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:09,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-12 15:24:09,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:24:09,976 INFO L87 Difference]: Start difference. First operand 41348 states and 110546 transitions. Second operand has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 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 15:24:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:10,448 INFO L93 Difference]: Finished difference Result 50527 states and 134028 transitions. [2021-06-12 15:24:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 15:24:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 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 326 [2021-06-12 15:24:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:10,506 INFO L225 Difference]: With dead ends: 50527 [2021-06-12 15:24:10,506 INFO L226 Difference]: Without dead ends: 50527 [2021-06-12 15:24:10,507 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 239.4ms TimeCoverageRelationStatistics Valid=496, Invalid=986, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 15:24:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50527 states. [2021-06-12 15:24:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50527 to 43150. [2021-06-12 15:24:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43150 states, 43148 states have (on average 2.668860665616019) internal successors, (115156), 43149 states have internal predecessors, (115156), 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 15:24:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43150 states to 43150 states and 115156 transitions. [2021-06-12 15:24:11,333 INFO L78 Accepts]: Start accepts. Automaton has 43150 states and 115156 transitions. Word has length 326 [2021-06-12 15:24:11,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:11,334 INFO L482 AbstractCegarLoop]: Abstraction has 43150 states and 115156 transitions. [2021-06-12 15:24:11,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 17.761904761904763) internal successors, (373), 21 states have internal predecessors, (373), 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 15:24:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 43150 states and 115156 transitions. [2021-06-12 15:24:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-06-12 15:24:11,379 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:11,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:11,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-06-12 15:24:11,586 INFO L430 AbstractCegarLoop]: === Iteration 36 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash -947502669, now seen corresponding path program 14 times [2021-06-12 15:24:11,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:11,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539159906] [2021-06-12 15:24:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 808 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-12 15:24:11,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:11,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539159906] [2021-06-12 15:24:11,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539159906] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:11,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884120734] [2021-06-12 15:24:11,725 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 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 15:24:11,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:11,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:11,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:11,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:12,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884120734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:12,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:12,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 18 [2021-06-12 15:24:12,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104521749] [2021-06-12 15:24:12,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:24:12,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:24:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:12,244 INFO L87 Difference]: Start difference. First operand 43150 states and 115156 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:12,589 INFO L93 Difference]: Finished difference Result 53420 states and 141238 transitions. [2021-06-12 15:24:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:24:12,589 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 327 [2021-06-12 15:24:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:12,653 INFO L225 Difference]: With dead ends: 53420 [2021-06-12 15:24:12,653 INFO L226 Difference]: Without dead ends: 53420 [2021-06-12 15:24:12,653 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 195.2ms TimeCoverageRelationStatistics Valid=338, Invalid=784, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:24:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2021-06-12 15:24:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 43830. [2021-06-12 15:24:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43830 states, 43828 states have (on average 2.6705758875604637) internal successors, (117046), 43829 states have internal predecessors, (117046), 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 15:24:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43830 states to 43830 states and 117046 transitions. [2021-06-12 15:24:13,410 INFO L78 Accepts]: Start accepts. Automaton has 43830 states and 117046 transitions. Word has length 327 [2021-06-12 15:24:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:13,410 INFO L482 AbstractCegarLoop]: Abstraction has 43830 states and 117046 transitions. [2021-06-12 15:24:13,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 43830 states and 117046 transitions. [2021-06-12 15:24:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-06-12 15:24:13,459 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:13,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:13,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-06-12 15:24:13,660 INFO L430 AbstractCegarLoop]: === Iteration 37 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:13,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:13,660 INFO L82 PathProgramCache]: Analyzing trace with hash -765780399, now seen corresponding path program 15 times [2021-06-12 15:24:13,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:13,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586910249] [2021-06-12 15:24:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:13,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:13,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586910249] [2021-06-12 15:24:13,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586910249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:13,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150113103] [2021-06-12 15:24:13,801 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 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 15:24:14,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-12 15:24:14,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:14,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:14,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:14,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150113103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:14,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:14,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:24:14,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037607904] [2021-06-12 15:24:14,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:24:14,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:14,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:24:14,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:14,551 INFO L87 Difference]: Start difference. First operand 43830 states and 117046 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:14,894 INFO L93 Difference]: Finished difference Result 57625 states and 151795 transitions. [2021-06-12 15:24:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:24:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 327 [2021-06-12 15:24:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:14,963 INFO L225 Difference]: With dead ends: 57625 [2021-06-12 15:24:14,963 INFO L226 Difference]: Without dead ends: 57625 [2021-06-12 15:24:14,963 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 190.2ms TimeCoverageRelationStatistics Valid=336, Invalid=786, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:24:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57625 states. [2021-06-12 15:24:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57625 to 43150. [2021-06-12 15:24:15,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43150 states, 43148 states have (on average 2.668860665616019) internal successors, (115156), 43149 states have internal predecessors, (115156), 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 15:24:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43150 states to 43150 states and 115156 transitions. [2021-06-12 15:24:15,768 INFO L78 Accepts]: Start accepts. Automaton has 43150 states and 115156 transitions. Word has length 327 [2021-06-12 15:24:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:15,768 INFO L482 AbstractCegarLoop]: Abstraction has 43150 states and 115156 transitions. [2021-06-12 15:24:15,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 43150 states and 115156 transitions. [2021-06-12 15:24:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-06-12 15:24:15,809 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:15,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:16,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-06-12 15:24:16,010 INFO L430 AbstractCegarLoop]: === Iteration 38 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:16,010 INFO L82 PathProgramCache]: Analyzing trace with hash -157121937, now seen corresponding path program 16 times [2021-06-12 15:24:16,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:16,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708042223] [2021-06-12 15:24:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:16,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:16,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708042223] [2021-06-12 15:24:16,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708042223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:16,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401834955] [2021-06-12 15:24:16,130 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 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 15:24:16,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:24:16,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:16,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:16,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:16,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401834955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:16,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:16,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:24:16,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281614986] [2021-06-12 15:24:16,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:24:16,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:16,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:24:16,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:16,857 INFO L87 Difference]: Start difference. First operand 43150 states and 115156 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:17,256 INFO L93 Difference]: Finished difference Result 58745 states and 155304 transitions. [2021-06-12 15:24:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:24:17,257 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 327 [2021-06-12 15:24:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:17,336 INFO L225 Difference]: With dead ends: 58745 [2021-06-12 15:24:17,336 INFO L226 Difference]: Without dead ends: 58745 [2021-06-12 15:24:17,337 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2021-06-12 15:24:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58745 states. [2021-06-12 15:24:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58745 to 45090. [2021-06-12 15:24:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45090 states, 45088 states have (on average 2.672440560681334) internal successors, (120495), 45089 states have internal predecessors, (120495), 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 15:24:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45090 states to 45090 states and 120495 transitions. [2021-06-12 15:24:18,209 INFO L78 Accepts]: Start accepts. Automaton has 45090 states and 120495 transitions. Word has length 327 [2021-06-12 15:24:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:18,209 INFO L482 AbstractCegarLoop]: Abstraction has 45090 states and 120495 transitions. [2021-06-12 15:24:18,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 45090 states and 120495 transitions. [2021-06-12 15:24:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-06-12 15:24:18,256 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:18,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:18,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-06-12 15:24:18,457 INFO L430 AbstractCegarLoop]: === Iteration 39 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:18,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1305890317, now seen corresponding path program 17 times [2021-06-12 15:24:18,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:18,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398777908] [2021-06-12 15:24:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:18,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:18,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398777908] [2021-06-12 15:24:18,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398777908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:18,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240313767] [2021-06-12 15:24:18,590 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 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 15:24:18,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-12 15:24:18,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:18,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:18,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:19,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240313767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:19,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:19,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:24:19,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842949683] [2021-06-12 15:24:19,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:24:19,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:19,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:24:19,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:19,224 INFO L87 Difference]: Start difference. First operand 45090 states and 120495 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:19,618 INFO L93 Difference]: Finished difference Result 64210 states and 169402 transitions. [2021-06-12 15:24:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 15:24:19,618 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 327 [2021-06-12 15:24:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:19,699 INFO L225 Difference]: With dead ends: 64210 [2021-06-12 15:24:19,699 INFO L226 Difference]: Without dead ends: 64210 [2021-06-12 15:24:19,699 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 197.2ms TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-06-12 15:24:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64210 states. [2021-06-12 15:24:20,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64210 to 48290. [2021-06-12 15:24:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48290 states, 48288 states have (on average 2.6773318422796555) internal successors, (129283), 48289 states have internal predecessors, (129283), 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 15:24:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48290 states to 48290 states and 129283 transitions. [2021-06-12 15:24:20,674 INFO L78 Accepts]: Start accepts. Automaton has 48290 states and 129283 transitions. Word has length 327 [2021-06-12 15:24:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:20,674 INFO L482 AbstractCegarLoop]: Abstraction has 48290 states and 129283 transitions. [2021-06-12 15:24:20,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 48290 states and 129283 transitions. [2021-06-12 15:24:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-06-12 15:24:20,721 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:20,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:20,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-06-12 15:24:20,921 INFO L430 AbstractCegarLoop]: === Iteration 40 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:20,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash 99115307, now seen corresponding path program 18 times [2021-06-12 15:24:20,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:20,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093611183] [2021-06-12 15:24:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:21,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:21,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093611183] [2021-06-12 15:24:21,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093611183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:21,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821145109] [2021-06-12 15:24:21,034 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 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 15:24:21,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-12 15:24:21,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:21,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:21,736 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:21,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821145109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:21,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:21,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:24:21,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783643106] [2021-06-12 15:24:21,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:24:21,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:24:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:21,813 INFO L87 Difference]: Start difference. First operand 48290 states and 129283 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:22,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:22,234 INFO L93 Difference]: Finished difference Result 71055 states and 187712 transitions. [2021-06-12 15:24:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 15:24:22,234 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 327 [2021-06-12 15:24:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:22,328 INFO L225 Difference]: With dead ends: 71055 [2021-06-12 15:24:22,328 INFO L226 Difference]: Without dead ends: 71055 [2021-06-12 15:24:22,328 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2021-06-12 15:24:22,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71055 states. [2021-06-12 15:24:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71055 to 49550. [2021-06-12 15:24:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49550 states, 49548 states have (on average 2.678856866069266) internal successors, (132732), 49549 states have internal predecessors, (132732), 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 15:24:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49550 states to 49550 states and 132732 transitions. [2021-06-12 15:24:23,314 INFO L78 Accepts]: Start accepts. Automaton has 49550 states and 132732 transitions. Word has length 327 [2021-06-12 15:24:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:23,315 INFO L482 AbstractCegarLoop]: Abstraction has 49550 states and 132732 transitions. [2021-06-12 15:24:23,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 49550 states and 132732 transitions. [2021-06-12 15:24:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-06-12 15:24:23,369 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:23,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:23,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-06-12 15:24:23,570 INFO L430 AbstractCegarLoop]: === Iteration 41 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:23,570 INFO L82 PathProgramCache]: Analyzing trace with hash -12411959, now seen corresponding path program 19 times [2021-06-12 15:24:23,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:23,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922664896] [2021-06-12 15:24:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:23,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:23,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922664896] [2021-06-12 15:24:23,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922664896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:23,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922853699] [2021-06-12 15:24:23,704 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 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 15:24:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:23,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 15:24:23,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 21 proven. 785 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:24,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922853699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:24,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:24,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2021-06-12 15:24:24,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905319848] [2021-06-12 15:24:24,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 15:24:24,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:24,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 15:24:24,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:24:24,280 INFO L87 Difference]: Start difference. First operand 49550 states and 132732 transitions. Second operand has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:24,707 INFO L93 Difference]: Finished difference Result 66465 states and 176301 transitions. [2021-06-12 15:24:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 15:24:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 327 [2021-06-12 15:24:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:24,792 INFO L225 Difference]: With dead ends: 66465 [2021-06-12 15:24:24,792 INFO L226 Difference]: Without dead ends: 66465 [2021-06-12 15:24:24,792 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 219.4ms TimeCoverageRelationStatistics Valid=372, Invalid=1034, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 15:24:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66465 states. [2021-06-12 15:24:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66465 to 48190. [2021-06-12 15:24:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48190 states, 48188 states have (on average 2.6760189258736613) internal successors, (128952), 48189 states have internal predecessors, (128952), 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 15:24:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48190 states to 48190 states and 128952 transitions. [2021-06-12 15:24:25,711 INFO L78 Accepts]: Start accepts. Automaton has 48190 states and 128952 transitions. Word has length 327 [2021-06-12 15:24:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:25,711 INFO L482 AbstractCegarLoop]: Abstraction has 48190 states and 128952 transitions. [2021-06-12 15:24:25,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 19.444444444444443) internal successors, (350), 18 states have internal predecessors, (350), 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 15:24:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 48190 states and 128952 transitions. [2021-06-12 15:24:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-06-12 15:24:25,754 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:25,754 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, 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 15:24:25,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:25,955 INFO L430 AbstractCegarLoop]: === Iteration 42 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2010118382, now seen corresponding path program 12 times [2021-06-12 15:24:25,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:25,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148365774] [2021-06-12 15:24:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 18 proven. 602 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-12 15:24:26,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:26,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148365774] [2021-06-12 15:24:26,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148365774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:26,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091291774] [2021-06-12 15:24:26,058 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 15:24:26,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-12 15:24:26,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:26,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:26,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 18 proven. 578 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-06-12 15:24:26,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091291774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:26,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:26,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-06-12 15:24:26,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351791300] [2021-06-12 15:24:26,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:24:26,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:26,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:24:26,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:24:26,677 INFO L87 Difference]: Start difference. First operand 48190 states and 128952 transitions. Second operand has 14 states, 14 states have (on average 21.785714285714285) internal successors, (305), 14 states have internal predecessors, (305), 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 15:24:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:27,149 INFO L93 Difference]: Finished difference Result 84430 states and 223303 transitions. [2021-06-12 15:24:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-12 15:24:27,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 21.785714285714285) internal successors, (305), 14 states have internal predecessors, (305), 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 351 [2021-06-12 15:24:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:27,258 INFO L225 Difference]: With dead ends: 84430 [2021-06-12 15:24:27,259 INFO L226 Difference]: Without dead ends: 84430 [2021-06-12 15:24:27,259 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 245.7ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:24:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84430 states. [2021-06-12 15:24:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84430 to 57010. [2021-06-12 15:24:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57010 states, 57008 states have (on average 2.6867632612966603) internal successors, (153167), 57009 states have internal predecessors, (153167), 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 15:24:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57010 states to 57010 states and 153167 transitions. [2021-06-12 15:24:28,604 INFO L78 Accepts]: Start accepts. Automaton has 57010 states and 153167 transitions. Word has length 351 [2021-06-12 15:24:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:28,605 INFO L482 AbstractCegarLoop]: Abstraction has 57010 states and 153167 transitions. [2021-06-12 15:24:28,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 21.785714285714285) internal successors, (305), 14 states have internal predecessors, (305), 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 15:24:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 57010 states and 153167 transitions. [2021-06-12 15:24:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:28,678 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:28,678 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, 2, 2, 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 15:24:28,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:28,896 INFO L430 AbstractCegarLoop]: === Iteration 43 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:28,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:28,896 INFO L82 PathProgramCache]: Analyzing trace with hash 853408001, now seen corresponding path program 13 times [2021-06-12 15:24:28,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:28,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361762874] [2021-06-12 15:24:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:24:29,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:29,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361762874] [2021-06-12 15:24:29,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361762874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:29,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63583454] [2021-06-12 15:24:29,084 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 15:24:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:29,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:29,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:24:29,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63583454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:29,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:29,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:24:29,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038771382] [2021-06-12 15:24:29,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:29,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:29,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:29,724 INFO L87 Difference]: Start difference. First operand 57010 states and 153167 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:30,135 INFO L93 Difference]: Finished difference Result 75215 states and 199169 transitions. [2021-06-12 15:24:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:24:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 356 [2021-06-12 15:24:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:30,227 INFO L225 Difference]: With dead ends: 75215 [2021-06-12 15:24:30,228 INFO L226 Difference]: Without dead ends: 75215 [2021-06-12 15:24:30,228 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 198.4ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:24:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75215 states. [2021-06-12 15:24:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75215 to 55070. [2021-06-12 15:24:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55070 states, 55068 states have (on average 2.6844628459359337) internal successors, (147828), 55069 states have internal predecessors, (147828), 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 15:24:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55070 states to 55070 states and 147828 transitions. [2021-06-12 15:24:31,230 INFO L78 Accepts]: Start accepts. Automaton has 55070 states and 147828 transitions. Word has length 356 [2021-06-12 15:24:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:31,230 INFO L482 AbstractCegarLoop]: Abstraction has 55070 states and 147828 transitions. [2021-06-12 15:24:31,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 55070 states and 147828 transitions. [2021-06-12 15:24:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:31,299 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:31,300 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, 2, 2, 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 15:24:31,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:31,500 INFO L430 AbstractCegarLoop]: === Iteration 44 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1978547041, now seen corresponding path program 14 times [2021-06-12 15:24:31,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:31,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163599824] [2021-06-12 15:24:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:24:31,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:31,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163599824] [2021-06-12 15:24:31,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163599824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:31,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905453921] [2021-06-12 15:24:31,636 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 15:24:31,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:31,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:31,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:31,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:24:32,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905453921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:32,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:32,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:24:32,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155657306] [2021-06-12 15:24:32,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:32,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:32,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:32,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:32,303 INFO L87 Difference]: Start difference. First operand 55070 states and 147828 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:32,806 INFO L93 Difference]: Finished difference Result 83920 states and 222943 transitions. [2021-06-12 15:24:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:24:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 356 [2021-06-12 15:24:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:32,900 INFO L225 Difference]: With dead ends: 83920 [2021-06-12 15:24:32,900 INFO L226 Difference]: Without dead ends: 83920 [2021-06-12 15:24:32,901 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 174.0ms TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:24:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83920 states. [2021-06-12 15:24:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83920 to 56330. [2021-06-12 15:24:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56330 states, 56328 states have (on average 2.6856447947734696) internal successors, (151277), 56329 states have internal predecessors, (151277), 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 15:24:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56330 states to 56330 states and 151277 transitions. [2021-06-12 15:24:33,961 INFO L78 Accepts]: Start accepts. Automaton has 56330 states and 151277 transitions. Word has length 356 [2021-06-12 15:24:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:33,962 INFO L482 AbstractCegarLoop]: Abstraction has 56330 states and 151277 transitions. [2021-06-12 15:24:33,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 56330 states and 151277 transitions. [2021-06-12 15:24:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:34,020 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:34,020 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, 2, 2, 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 15:24:34,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-06-12 15:24:34,220 INFO L430 AbstractCegarLoop]: === Iteration 45 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:34,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1109645245, now seen corresponding path program 15 times [2021-06-12 15:24:34,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:34,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104049629] [2021-06-12 15:24:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:24:34,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:34,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104049629] [2021-06-12 15:24:34,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104049629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:34,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134370709] [2021-06-12 15:24:34,348 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 15:24:34,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-12 15:24:34,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:34,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:34,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:24:35,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134370709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:35,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:35,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:24:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449017652] [2021-06-12 15:24:35,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:35,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:35,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:35,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:35,009 INFO L87 Difference]: Start difference. First operand 56330 states and 151277 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:35,544 INFO L93 Difference]: Finished difference Result 79860 states and 212857 transitions. [2021-06-12 15:24:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:24:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 356 [2021-06-12 15:24:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:35,645 INFO L225 Difference]: With dead ends: 79860 [2021-06-12 15:24:35,645 INFO L226 Difference]: Without dead ends: 79860 [2021-06-12 15:24:35,645 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:24:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79860 states. [2021-06-12 15:24:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79860 to 57010. [2021-06-12 15:24:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57010 states, 57008 states have (on average 2.6867632612966603) internal successors, (153167), 57009 states have internal predecessors, (153167), 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 15:24:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57010 states to 57010 states and 153167 transitions. [2021-06-12 15:24:36,756 INFO L78 Accepts]: Start accepts. Automaton has 57010 states and 153167 transitions. Word has length 356 [2021-06-12 15:24:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:36,757 INFO L482 AbstractCegarLoop]: Abstraction has 57010 states and 153167 transitions. [2021-06-12 15:24:36,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 57010 states and 153167 transitions. [2021-06-12 15:24:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:36,820 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:36,820 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, 2, 2, 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 15:24:37,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:37,021 INFO L430 AbstractCegarLoop]: === Iteration 46 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:37,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:37,021 INFO L82 PathProgramCache]: Analyzing trace with hash 998117979, now seen corresponding path program 16 times [2021-06-12 15:24:37,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:37,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299176074] [2021-06-12 15:24:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 800 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-06-12 15:24:37,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:37,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299176074] [2021-06-12 15:24:37,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299176074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:37,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689626915] [2021-06-12 15:24:37,163 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 15:24:37,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:24:37,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:37,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:37,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 776 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-06-12 15:24:37,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689626915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:37,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:37,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-06-12 15:24:37,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393654302] [2021-06-12 15:24:37,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:37,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:37,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:37,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:37,993 INFO L87 Difference]: Start difference. First operand 57010 states and 153167 transitions. Second operand has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:38,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:38,401 INFO L93 Difference]: Finished difference Result 80745 states and 215054 transitions. [2021-06-12 15:24:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 15:24:38,401 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 356 [2021-06-12 15:24:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:38,498 INFO L225 Difference]: With dead ends: 80745 [2021-06-12 15:24:38,498 INFO L226 Difference]: Without dead ends: 80745 [2021-06-12 15:24:38,498 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 196.7ms TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-06-12 15:24:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80745 states. [2021-06-12 15:24:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80745 to 57690. [2021-06-12 15:24:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57690 states, 57688 states have (on average 2.68785535986687) internal successors, (155057), 57689 states have internal predecessors, (155057), 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 15:24:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57690 states to 57690 states and 155057 transitions. [2021-06-12 15:24:39,585 INFO L78 Accepts]: Start accepts. Automaton has 57690 states and 155057 transitions. Word has length 356 [2021-06-12 15:24:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:39,585 INFO L482 AbstractCegarLoop]: Abstraction has 57690 states and 155057 transitions. [2021-06-12 15:24:39,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.235294117647058) internal successors, (344), 17 states have internal predecessors, (344), 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 15:24:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 57690 states and 155057 transitions. [2021-06-12 15:24:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:39,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:39,653 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, 2, 2, 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 15:24:39,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:39,854 INFO L430 AbstractCegarLoop]: === Iteration 47 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:39,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:39,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1126090303, now seen corresponding path program 17 times [2021-06-12 15:24:39,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:39,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742026780] [2021-06-12 15:24:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:40,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:40,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742026780] [2021-06-12 15:24:40,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742026780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:40,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906233733] [2021-06-12 15:24:40,166 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 15:24:40,359 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-12 15:24:40,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:40,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:40,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:40,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906233733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:40,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:40,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:24:40,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065879363] [2021-06-12 15:24:40,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:40,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:40,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:40,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:40,711 INFO L87 Difference]: Start difference. First operand 57690 states and 155057 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:41,219 INFO L93 Difference]: Finished difference Result 80040 states and 212249 transitions. [2021-06-12 15:24:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:24:41,219 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 356 [2021-06-12 15:24:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:41,305 INFO L225 Difference]: With dead ends: 80040 [2021-06-12 15:24:41,305 INFO L226 Difference]: Without dead ends: 80040 [2021-06-12 15:24:41,306 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:24:41,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80040 states. [2021-06-12 15:24:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80040 to 56230. [2021-06-12 15:24:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56230 states, 56228 states have (on average 2.6851746460838015) internal successors, (150982), 56229 states have internal predecessors, (150982), 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 15:24:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56230 states to 56230 states and 150982 transitions. [2021-06-12 15:24:42,361 INFO L78 Accepts]: Start accepts. Automaton has 56230 states and 150982 transitions. Word has length 356 [2021-06-12 15:24:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:42,362 INFO L482 AbstractCegarLoop]: Abstraction has 56230 states and 150982 transitions. [2021-06-12 15:24:42,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 56230 states and 150982 transitions. [2021-06-12 15:24:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:42,430 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:42,430 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, 2, 2, 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 15:24:42,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-06-12 15:24:42,632 INFO L430 AbstractCegarLoop]: === Iteration 48 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:42,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1962101983, now seen corresponding path program 18 times [2021-06-12 15:24:42,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:42,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358829361] [2021-06-12 15:24:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:42,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:42,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358829361] [2021-06-12 15:24:42,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358829361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:42,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370503396] [2021-06-12 15:24:42,749 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 15:24:43,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-12 15:24:43,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:43,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:43,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:43,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370503396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:43,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:43,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:24:43,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913201990] [2021-06-12 15:24:43,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:43,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:43,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:43,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:43,411 INFO L87 Difference]: Start difference. First operand 56230 states and 150982 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:43,988 INFO L93 Difference]: Finished difference Result 93860 states and 250583 transitions. [2021-06-12 15:24:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-12 15:24:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 356 [2021-06-12 15:24:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:44,104 INFO L225 Difference]: With dead ends: 93860 [2021-06-12 15:24:44,105 INFO L226 Difference]: Without dead ends: 93860 [2021-06-12 15:24:44,105 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 178.7ms TimeCoverageRelationStatistics Valid=280, Invalid=776, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 15:24:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93860 states. [2021-06-12 15:24:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93860 to 60790. [2021-06-12 15:24:45,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60790 states, 60788 states have (on average 2.6904981246298614) internal successors, (163550), 60789 states have internal predecessors, (163550), 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 15:24:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60790 states to 60790 states and 163550 transitions. [2021-06-12 15:24:45,226 INFO L78 Accepts]: Start accepts. Automaton has 60790 states and 163550 transitions. Word has length 356 [2021-06-12 15:24:45,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:45,226 INFO L482 AbstractCegarLoop]: Abstraction has 60790 states and 163550 transitions. [2021-06-12 15:24:45,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:45,227 INFO L276 IsEmpty]: Start isEmpty. Operand 60790 states and 163550 transitions. [2021-06-12 15:24:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:45,298 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:45,298 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, 2, 2, 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 15:24:45,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-06-12 15:24:45,499 INFO L430 AbstractCegarLoop]: === Iteration 49 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:45,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:45,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1850574717, now seen corresponding path program 19 times [2021-06-12 15:24:45,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:45,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957165546] [2021-06-12 15:24:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:45,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:45,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957165546] [2021-06-12 15:24:45,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957165546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:45,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996032961] [2021-06-12 15:24:45,614 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 15:24:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:46,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:46,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:46,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996032961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:46,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:46,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:24:46,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614000157] [2021-06-12 15:24:46,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:46,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:46,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:46,386 INFO L87 Difference]: Start difference. First operand 60790 states and 163550 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:46,994 INFO L93 Difference]: Finished difference Result 92305 states and 246335 transitions. [2021-06-12 15:24:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:24:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 356 [2021-06-12 15:24:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:47,100 INFO L225 Difference]: With dead ends: 92305 [2021-06-12 15:24:47,100 INFO L226 Difference]: Without dead ends: 92305 [2021-06-12 15:24:47,100 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 185.1ms TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:24:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92305 states. [2021-06-12 15:24:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92305 to 60110. [2021-06-12 15:24:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60110 states, 60108 states have (on average 2.6894922472882143) internal successors, (161660), 60109 states have internal predecessors, (161660), 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 15:24:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60110 states to 60110 states and 161660 transitions. [2021-06-12 15:24:48,238 INFO L78 Accepts]: Start accepts. Automaton has 60110 states and 161660 transitions. Word has length 356 [2021-06-12 15:24:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:48,239 INFO L482 AbstractCegarLoop]: Abstraction has 60110 states and 161660 transitions. [2021-06-12 15:24:48,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 60110 states and 161660 transitions. [2021-06-12 15:24:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:48,306 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:48,306 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, 2, 2, 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 15:24:48,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-06-12 15:24:48,507 INFO L430 AbstractCegarLoop]: === Iteration 50 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:48,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:48,507 INFO L82 PathProgramCache]: Analyzing trace with hash -466572671, now seen corresponding path program 20 times [2021-06-12 15:24:48,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:48,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624669857] [2021-06-12 15:24:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:48,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:48,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624669857] [2021-06-12 15:24:48,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624669857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:48,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572998014] [2021-06-12 15:24:48,623 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 15:24:48,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:48,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:48,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:48,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:49,184 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:49,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572998014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:49,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:49,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:24:49,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783960605] [2021-06-12 15:24:49,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:49,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:49,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:49,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:49,230 INFO L87 Difference]: Start difference. First operand 60110 states and 161660 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:49,665 INFO L93 Difference]: Finished difference Result 81200 states and 216181 transitions. [2021-06-12 15:24:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:24:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 356 [2021-06-12 15:24:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:49,766 INFO L225 Difference]: With dead ends: 81200 [2021-06-12 15:24:49,766 INFO L226 Difference]: Without dead ends: 81200 [2021-06-12 15:24:49,767 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 192.2ms TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:24:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81200 states. [2021-06-12 15:24:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81200 to 62530. [2021-06-12 15:24:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62530 states, 62528 states have (on average 2.691002430910952) internal successors, (168263), 62529 states have internal predecessors, (168263), 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 15:24:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 168263 transitions. [2021-06-12 15:24:50,890 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 168263 transitions. Word has length 356 [2021-06-12 15:24:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:50,890 INFO L482 AbstractCegarLoop]: Abstraction has 62530 states and 168263 transitions. [2021-06-12 15:24:50,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 168263 transitions. [2021-06-12 15:24:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-06-12 15:24:50,965 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:50,965 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, 2, 2, 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 15:24:51,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:51,166 INFO L430 AbstractCegarLoop]: === Iteration 51 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:51,166 INFO L82 PathProgramCache]: Analyzing trace with hash -578099937, now seen corresponding path program 21 times [2021-06-12 15:24:51,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:51,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700614281] [2021-06-12 15:24:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:51,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:51,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700614281] [2021-06-12 15:24:51,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700614281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:51,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573206140] [2021-06-12 15:24:51,283 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 15:24:51,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-12 15:24:51,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:51,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:51,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 21 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-06-12 15:24:52,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573206140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:52,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:52,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 15:24:52,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064211335] [2021-06-12 15:24:52,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 15:24:52,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 15:24:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:24:52,114 INFO L87 Difference]: Start difference. First operand 62530 states and 168263 transitions. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:52,758 INFO L93 Difference]: Finished difference Result 107085 states and 286976 transitions. [2021-06-12 15:24:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 15:24:52,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 356 [2021-06-12 15:24:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:52,894 INFO L225 Difference]: With dead ends: 107085 [2021-06-12 15:24:52,894 INFO L226 Difference]: Without dead ends: 107085 [2021-06-12 15:24:52,894 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 186.9ms TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2021-06-12 15:24:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107085 states. [2021-06-12 15:24:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107085 to 64470. [2021-06-12 15:24:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64470 states, 64468 states have (on average 2.692839858534467) internal successors, (173602), 64469 states have internal predecessors, (173602), 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 15:24:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64470 states to 64470 states and 173602 transitions. [2021-06-12 15:24:54,139 INFO L78 Accepts]: Start accepts. Automaton has 64470 states and 173602 transitions. Word has length 356 [2021-06-12 15:24:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:54,140 INFO L482 AbstractCegarLoop]: Abstraction has 64470 states and 173602 transitions. [2021-06-12 15:24:54,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 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 15:24:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 64470 states and 173602 transitions. [2021-06-12 15:24:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-06-12 15:24:54,216 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:54,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:54,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:54,434 INFO L430 AbstractCegarLoop]: === Iteration 52 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1006996314, now seen corresponding path program 9 times [2021-06-12 15:24:54,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:54,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618940463] [2021-06-12 15:24:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 27 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:55,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:55,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618940463] [2021-06-12 15:24:55,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618940463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:55,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124174367] [2021-06-12 15:24:55,062 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 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 15:24:55,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-06-12 15:24:55,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:55,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:55,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 27 proven. 1359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:24:55,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124174367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:55,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:55,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-12 15:24:55,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925253496] [2021-06-12 15:24:55,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-12 15:24:55,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:55,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-12 15:24:55,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:24:55,813 INFO L87 Difference]: Start difference. First operand 64470 states and 173602 transitions. Second operand has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 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 15:24:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:56,632 INFO L93 Difference]: Finished difference Result 74359 states and 198824 transitions. [2021-06-12 15:24:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 15:24:56,632 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 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 360 [2021-06-12 15:24:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:56,712 INFO L225 Difference]: With dead ends: 74359 [2021-06-12 15:24:56,712 INFO L226 Difference]: Without dead ends: 74359 [2021-06-12 15:24:56,713 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 731.7ms TimeCoverageRelationStatistics Valid=601, Invalid=1205, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 15:24:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74359 states. [2021-06-12 15:24:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74359 to 66272. [2021-06-12 15:24:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66272 states, 66270 states have (on average 2.6891806247170664) internal successors, (178212), 66271 states have internal predecessors, (178212), 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 15:24:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66272 states to 66272 states and 178212 transitions. [2021-06-12 15:24:58,151 INFO L78 Accepts]: Start accepts. Automaton has 66272 states and 178212 transitions. Word has length 360 [2021-06-12 15:24:58,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:24:58,152 INFO L482 AbstractCegarLoop]: Abstraction has 66272 states and 178212 transitions. [2021-06-12 15:24:58,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 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 15:24:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 66272 states and 178212 transitions. [2021-06-12 15:24:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-06-12 15:24:58,231 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:24:58,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:58,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:24:58,449 INFO L430 AbstractCegarLoop]: === Iteration 53 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:24:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:24:58,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1403343692, now seen corresponding path program 20 times [2021-06-12 15:24:58,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:24:58,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615934288] [2021-06-12 15:24:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:24:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:24:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1061 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-12 15:24:58,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:24:58,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615934288] [2021-06-12 15:24:58,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615934288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:58,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700815986] [2021-06-12 15:24:58,690 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 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 15:24:58,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:24:58,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:24:58,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:24:58,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:24:59,435 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-12 15:24:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1038 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:24:59,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700815986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:24:59,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:24:59,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 20 [2021-06-12 15:24:59,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889246091] [2021-06-12 15:24:59,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:24:59,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:24:59,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:24:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:24:59,448 INFO L87 Difference]: Start difference. First operand 66272 states and 178212 transitions. Second operand has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 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 15:24:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:24:59,889 INFO L93 Difference]: Finished difference Result 78842 states and 210214 transitions. [2021-06-12 15:24:59,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 15:24:59,889 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 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 361 [2021-06-12 15:24:59,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:24:59,993 INFO L225 Difference]: With dead ends: 78842 [2021-06-12 15:24:59,993 INFO L226 Difference]: Without dead ends: 78842 [2021-06-12 15:24:59,993 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=425, Invalid=981, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 15:25:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78842 states. [2021-06-12 15:25:00,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78842 to 67632. [2021-06-12 15:25:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67632 states, 67630 states have (on average 2.69099512050865) internal successors, (181992), 67631 states have internal predecessors, (181992), 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 15:25:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67632 states to 67632 states and 181992 transitions. [2021-06-12 15:25:01,148 INFO L78 Accepts]: Start accepts. Automaton has 67632 states and 181992 transitions. Word has length 361 [2021-06-12 15:25:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:25:01,149 INFO L482 AbstractCegarLoop]: Abstraction has 67632 states and 181992 transitions. [2021-06-12 15:25:01,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 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 15:25:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 67632 states and 181992 transitions. [2021-06-12 15:25:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-06-12 15:25:01,235 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:25:01,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:01,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:25:01,452 INFO L430 AbstractCegarLoop]: === Iteration 54 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:25:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:25:01,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1061232174, now seen corresponding path program 21 times [2021-06-12 15:25:01,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:25:01,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305912525] [2021-06-12 15:25:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:25:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:25:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1038 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:25:01,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:25:01,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305912525] [2021-06-12 15:25:01,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305912525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:01,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787400256] [2021-06-12 15:25:01,896 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 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 15:25:02,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-12 15:25:02,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:25:02,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 15:25:02,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:25:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 24 proven. 1038 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 15:25:02,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787400256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:25:02,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:25:02,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2021-06-12 15:25:02,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504498580] [2021-06-12 15:25:02,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-12 15:25:02,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:25:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-12 15:25:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:25:02,712 INFO L87 Difference]: Start difference. First operand 67632 states and 181992 transitions. Second operand has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 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 15:25:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:25:03,343 INFO L93 Difference]: Finished difference Result 84237 states and 223851 transitions. [2021-06-12 15:25:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 15:25:03,345 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 19.2) internal successors, (384), 20 states have internal predecessors, (384), 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 361 [2021-06-12 15:25:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:25:03,453 INFO L225 Difference]: With dead ends: 84237 [2021-06-12 15:25:03,453 INFO L226 Difference]: Without dead ends: 84237 [2021-06-12 15:25:03,453 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 512.7ms TimeCoverageRelationStatistics Valid=423, Invalid=983, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 15:25:03,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84237 states.